A group of 20 labours can complete a work in 15 days. How much labours should be added to complete that work in 12 days? Find.

Answers

Answer 1

Step-by-step explanation:

workers = k× number of days (k= constant of proportionality)

w = k× days

20= 15× k

k = 20/15

w = k× days

substitute the values

w = 20/15 × 12

w = 16

Number of workers required = 16

IF YOU THINK IT HELPED YOU MARK IT AS BRAINLIIST

Answer 2

Answer:

5

Step-by-step explanation:

15d -- 20l

12d -- (x)l

x= 15×20

12

x= 25

25-20= 5

Ans = 5.


Related Questions

Joe and chris each have a lawn mowing business. Joe charges 40 to mow 2 acres. Chris charges 30 to mow 1. 2 acres. Who charges more per acre? What is the answer

Answers

Joe charges more per acre than Chris. Joe charges $20 per acre and Chris charges $30 per acre.
 

Starting a lawn mowing business can be a profitable and rewarding venture if you have the right tools, skills, and strategies in place.Research your local area to determine the demand for lawn mowing services, the competition, and the going rate for services. This will help you determine whether starting a lawn mowing business is a viable option in your area.Create a business plan that outlines your goals, target market, services, pricing, and marketing strategies. This will help you stay organized and focused as you launch and grow your business.Check with your local government to find out what licenses and permits you need to start a lawn mowing business in your area.Therefore,from the given information Joe charges more per acre.

For such more questions on lawn mowing business:

brainly.com/question/29300074

#SPJ11

A psychologist studied the number of hours a worker sleeps at night and the number of errors made in a given task the following morning. Table 1 shows the results for the twenty people who were studied. It was also discovered that the average number of errors made by a normal person is 5.6.
Person 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Hours of sleep 4 8 6 10 5 6 7 7 9 3 10 8 12 3 9 5 4 3 12 7
Mistake done 7 2 8 6 9 6 9 8 1 9 8 3 6 4 2 6 8 5 2 3
Table 1
Based on Table 1 above:
Illustrate the two variables given (separately) by means of a bar chart. You are required to prepare TWO different graphs for the variables. The first graph your x-axis will be hours of sleep (horizontal line) and your y-axis will be frequency (vertical line). The second graph your x-axis will be mistakes done (horizontal line) and your y-axis will be frequency (vertical line). CANNOT COMBINE THE GRAPHS

Answers

It should be noted that the number of hours slept will have to be plotted on the x-axis.

Also, the number of mistakes that was made will be plotted on the y-axis.

Each point on the scatterplot will represent one participant in the study.

How to explain the scatterplot

It should be noted that to illustrate the two variables given in Table 1, we can create a scatterplot using R code.

In this case the number of hours slept will have to be plotted on the x-axis, and the number of mistakes made will be plotted on the y-axis.

Looking at the scatter plot, we can see that there is a general trend that more hours of sleep are associated with fewer mistakes made.

Learn more about scatterplot on

https://brainly.com/question/29785227

#SPJ1

Evaluate the function at the given values of the independent variable and simplify.

f(x)=6x^2-1/x^2


(a) f(5) (b) f(-5) (c) f(-x)

(Type an integer or a fraction. Simplify your answer.)

Answers

The functions are evaluated to give;

a. f(5) = 149/25

b. f(-5) = 149/25

c. f(-x) = 6x² - 1/x²

What are functions?

Functions are defined as equation , laws or expressions showing the relationship between variables.

These variables are known as;

The independent variableThe dependent variable

From the information given, we have that;

f(x)=6x^2-1/x^2

Now, to determine the functions, f(5), f(-5) and f(-x), we need to substitute the value inside the bracket as the value of x in each of the functions,

We have;

f(5) = 6(5)²- 1/(5)²

expand the bracket and subtract

f(5) = 149/25

For f(-5) = 6(-5)² - 1/(-5)²

f(-5) = 149/25

For f(-x) = 6(-x)² - 1/(-x)²

f(-x) = 6x² - 1/x²

Learn about functions at: https://brainly.com/question/25638609

#SPJ1

the number of salmon observed in the sacramento river and the feather river in the last five years were counted and listed in the chart below: which of the following statements is true about the relation represented in the table? the relation is a function. the relation is not a function. there is not enough information to determine if it is a function or not.

Answers

The correct option is the relation is not a function.


A function is defined as a relation in which each input has exactly one output. A relation is any set of ordered pairs. According to the given chart:|Year|Sacramento River|Feather River| 2008|271,999|0| 2009|123,739|0| 2010|174,948|16,857| 2011|158,956|22,129| 2012|163,603|19,799| As we can see in the table, the Sacramento river has different number of salmon at a given year.

For example, in the year 2008, there are 271,999 salmon in the Sacramento river, in the year 2009, there are 123,739 salmon in the Sacramento river. The same with the Feather river. There is a year when there are zero salmon and there are years with different number of salmon.

Therefore, this relation is not a function. Hence, the correct option is the relation is not a function.

To know more about function, refer here:

https://brainly.com/question/12431044#

#SPJ11

the diagram shows the price paid by two groups of people visiting a fair. assume that each adult pays the same price and each child pays the same price

Answers

Answer:

Let, price paid by adults be x and children be y.

then,

5x+4y=78----(1)

3x+6y=63----(2)

Solving both we get

x=12,y=4.5

So adult pays £12 and child pays £4.5

What is the area of the figure?
5 cm
6 cm
14 cm
9.4 Cm

Answers

Answer= [tex]50cm^{2}[/tex]

Question 10, please help

10/10

Answers

Optiοn C represents a prοpοrtiοnal relatiοnship . The values οf all the given values are prοpοrtiοnal tο each οther i.e, 1/3.

What is prοpοrtiοnal relatiοnship?

A prοpοrtiοnal relatiοnship is a mathematical relatiοnship between twο variables where the ratiο οf the twο variables is cοnstant. In οther wοrds, if we have twο variables x and y, they are said tο have a prοpοrtiοnal relatiοnship if the ratiο οf x tο y is always the same, regardless οf the values οf x and y.

This can be expressed mathematically as:

x/y = k

where k is a cοnstant called the prοpοrtiοnality cοnstant. This means that as x increases, y will increase prοpοrtiοnally, and as x decreases, y will decrease prοpοrtiοnally.

Learn more about variables

https://brainly.com/question/17344045

#SPJ1

How do you know when to use cos, tan, or sin when trying to find a segment of a trignagle. Example:
I had to use cos for this and had to find segment AB and AC. i just need a better understanding.

Answers

Answer:


To find AC, you use the tangent ratio, which is opposite over adjacent.

So, tan 27° = 12/AC.

AC = 23.551


To find AB, use the sine function, or opposite over hypotenuse.

So, sin 27° = 12/AB

AB = 26.432

You deposit $2000 into a savings account advertising 7% annual interest rate compounded bi-annually. To nearest dollar, what is your end-of-year balance?

Answers

My end of the year balance is $2,142.45.

What is my end of the year balance?

If the amount that is deposited is compounded bi-annually, it means that both the amount deposited and the interest earned, increases in value twice in a year. This is because bi-annually means twice in a year. An amount that is compounded grows at an exponential rate at each compounding date.

The formula for calculating future value:

FV = P (1 + r)^nm

Where:

FV = Future value P = Present value R = interest rate = 7%/2 = 3.5%m = number of compoundingN = number of years

2000 x (1 + 0.035)^(2 x 1)

2000 x (1.035)^2 = $2,142.45

To learn more about future value, please check: https://brainly.com/question/18760477

#SPJ1

Use the Intermediate Value Theorem to show that P(x) = x^5 +
4x^3−10x−6
has a root on [0, 2].

Answers

P(x) is a continuous function on [0, 2]. We can conclude that the given function has a root on [0, 2].

The Intermediate Value Theorem is a mathematical theorem that states that a continuous function between two points takes on every value between the two points. The proof of this theorem is easy to understand and uses the definition of a continuous function. The theorem is used to establish the existence of roots or zeroes of functions.The statement is given by the Intermediate Value Theorem that “if f(x) is a continuous function on the interval [a,b], then for any value k that lies between f(a) and f(b) inclusive, there must be at least one value c on the interval [a,b] such that f(c)=k”.Use the Intermediate Value Theorem to show that P(x) = x5 + 4x3 − 10x − 6 has a root on [0, 2]Given, the function P(x) = x5 + 4x3 − 10x − 6Step 1: Verify if the function is continuous on [0, 2].The function P(x) is a polynomial function, and all the polynomial functions are continuous functions.

Therefore, P(x) is a continuous function on [0, 2].Step 2: Check the signs of the function at the endpoints f(0) and f(2).Let’s check f(0) and f(2)f(0) = P(0) = 0^5 + 4(0)^3 – 10(0) – 6= -6f(2) = P(2) = 2^5 + 4(2)^3 – 10(2) – 6= 50Step 3: Check if the value 0 lies between f(0) and f(2) inclusive.f(0) < 0 < f(2)Since 0 lies between f(0) and f(2), according to the Intermediate Value Theorem, there must be at least one value c on the interval [0,2] such that f(c)=0Hence, we can conclude that the given function has a root on [0, 2] Therefore, we can conclude that the given function has a root on [0, 2].

Learn more about Intermediate Value

brainly.com/question/29712240

#SPJ11

Hayden wrote the equation 470 divided by h=3,008, where h is the number of hours it took a plane flying at a constant speed of 470 miles per hour to travel 3,008 miles. Solve for h.

Answers

Therefore , the solution of the given problem of equation comes out to be it took the aircraft roughly 0.156 hours, or 9.36 minutes, to fly 3,008 miles at a constant speed of 470 miles per hour.

Define equation.

Variable words are commonly used in complex algorithms to show consistency between two contradictory claims. Academic expressions called equations are used to show the equality of various academic numbers. In this case, normalization produces b + 7, in contrast to another algorithm, which can evaluate data from y + 7, divides 12 through two components, and produces y + 7.

Here,

The formula Hayden created is:

=> 470/h = 3008

We must separate h on one side of the equation in order to solve for it. By increasing both parts of the equation by h, we can achieve this:

=> 470 = 3008h

Then, to get h on its own, split the two sides of the equation by 3008:

=> h = 470/3008

By dividing the numerator and denominator by their 2 largest common factor, we can simplify this fraction:

=> h = 235/1504

Therefore, it took the aircraft roughly 0.156 hours, or 9.36 minutes, to fly 3,008 miles at a constant speed of 470 miles per hour.

To know more about equation visit:

https://brainly.com/question/649785

#SPJ1

PLS need this quick.

Answers

Answer:          1

Step-by-step explanation:

i cant

Omar uses a sprinkler to water his yard. The sprinkler sprays water in a circle that has a radius of 15 feet. His yard is sharped like an irregular quadrilateral , and he often moves sprinkler so the entire yard gets watered. He places the sprinkler in such a way that the upper right corner of his yard gets watered, even though the side walk gets wet. How can you estimate the area of the sidewalk also gets wet

Answers

The estimated area of the sidewalk that is getting wet is 706.5 square feet

The area of the sidewalk that is getting wet can be estimated by using the formula for the area of a circle: A = πr2, where "r" is the radius of the circle, which in this case is 15 feet. (A = π(152) = 706.5).

Radius of a circle is the distance from the center of the circle to any point on it's circumference. It is usually denoted by 'R' or 'r'. This quantity has importance in almost all circle-related formulas. The area and circumference of a circle are also measured in terms of radius.

For such more questions on radius of circle:  

https://brainly.com/question/24375372

#SPJ11

DUE TOMORROW! 30 POINTS
20. Consider a line passing through (2,5) with a slope of ¾ . Write its equation. What is its y-intercept?
21. Write the equation for a line parallel to the line from #20 passing through (5,1). Now write the equation for a line perpendicular to the same line, through the same point.

Answers

Answer:

20)  y = 3/4x + 3 1/2

21)  Parallel: y = 3/4 x - 2 3/4

Perpendicular: y = [tex]\frac{-4}{3 }[/tex] x + 7 [tex]\frac{2}{3}[/tex]

Step-by-step explanation:

20)

y = mx + b

y = __x + ___  We need to find the slope that the y-intercept. We are given the slope 3/4.  We will you the x and y values from the point (2,5) to find the y intercept. Use 5 for y and 2 for x

y = mx + b

5 = 2(3/4) + b

5 = 3/2 + b  Subtract 3/2 from both sides

5 - 3/2 = 3/2 -3/2 +b

[tex]\frac{10}{2}[/tex] - [tex]\frac{3}{2}[/tex] = b

[tex]\frac{7}{2}[/tex] or 3 [tex]\frac{1}{2}[/tex]

y = 3/4x + 3 1/2

21)

Parallel slopes are equal so the slope will be 3/4.  Now we will use the x and y values from the point (5,1) to find the y-intercept.  We will use 1for y and 5 for x

y = mx + b

1 = 5(3/4) +b

1 = 15/4 + b  Subtract 15/4 from both sides.

[tex]\frac{4}{4}[/tex] - [tex]\frac{15}{4}[/tex] = [tex]\frac{15}{4}[/tex] - [tex]\frac{15}{4}[/tex] + b

[tex]\frac{-11}{4}[/tex] or - 2 [tex]\frac{3}{4}[/tex]

y = 3/4 x - 2 3/4

Perpendicular slopes or the opposite reciprocals.  So the slope of the reciprocal equations would be [tex]\frac{-4}{3}[/tex]. We would still use the x and y values from the point (5,1)

1 = -4/3(5) + b

1 = [tex]\frac{-20}{3}[/tex] + b  Add 20/3 to both sides

[tex]\frac{3}{3}[/tex] + [tex]\frac{20}{3}[/tex] = [tex]\frac{-20}{3}[/tex] + [tex]\frac{20}3}[/tex] + b

[tex]\frac{23}{3}[/tex] or 7 2/3

y = [tex]\frac{-4}{3 }[/tex] x + 7 [tex]\frac{2}{3}[/tex]

Helping in the name of Jesus.

#8Hi there,Can you help me? I am really confused and please can you show your work in order to understand and show your answer to compare my answers to yours if; I got it right Find the terminal point
P(x,y)
on the unit circle determined by the given value of
t
.
t=− 3


P(x,y)=(− 2
1

, 2
3


)

Answers

The terminal point P(x,y)=(-23) can be located on the coordinate plane at the point (-23, -23).

The terminal point P(x,y)=(-23) can be visualized on a coordinate plane. To calculate the x- and y-coordinates of this point, we must first understand the definition of a terminal point. A terminal point is a point that marks the end of a line.

In this case, the terminal point P is the end of a line with coordinates (x, y) = (-23).



To calculate the x-coordinate of this point, we can simply look at the first number in the coordinate pair. In this case, the x-coordinate of P is -23.

To calculate the y-coordinate of this point, we must look at the second number in the coordinate pair. In this case, the y-coordinate of P is also -23.

To know more about coordinate geometry, click here:

https://brainly.com/question/29634141

#SPJ11

A recipe for vegetable fritata calls for 10 chard leaves for evry 6 eggs. Eggs are available either by the dozen for $3. 20 or by the half-dozen for $1. 70. Marissa wants to use 25 chard leaves to make a fritata. What is the minimum she should spend on eggs to use all of her chard leaves while keeping the recipe in the correct proportion

Answers

The minimum Marissa should spend on eggs to use all of her chard leaves while keeping the recipe in the correct proportion is $3.40.

To use 10 chard leaves, the recipe calls for 6 eggs. Let's find out how many eggs we need to use 25 chard leaves in the same proportion:

10 chard leaves / 6 eggs = 25 chard leaves / x eggs

where x is the number of eggs needed.

Cross-multiplying, we get:

10 chard leaves * x eggs = 6 eggs * 25 chard leaves

Simplifying, we get:

x = (6 eggs * 25 chard leaves) / 10 chard leaves

x = 15 eggs

So, Marissa needs 15 eggs to use 25 chard leaves in the recipe.

Now, let's find out the cheapest way to buy 15 eggs. She can buy either a dozen eggs for $3.20 or a half-dozen eggs for $1.70. Since a dozen contains 12 eggs and a half-dozen contains 6 eggs, she can either buy:

1 dozen + 3 individual eggs = 15 eggs for $3.20 + $0.24 = $3.44

2 half-dozens = 12 eggs for $3.40

Therefore, the minimum Marissa should spend on eggs to use all of her chard leaves while keeping the recipe in the correct proportion is $3.40.

For more such questions on Equation: brainly.com/question/29657992

#SPJ4

Find an equation of the line with gradient -3 and that passes through the
point (0,0)
Submit Answer

Answers

Answer:

y = -3x

Step-by-step explanation:

Using the 'y=mx+c' form,

Since m = -3,

y = -3x + c

Substituting (0,0) into the above equation:

0 = 0 + c

Hence,

y = -3x

Feel free to mark this as brainliest! :)

Lesson 6: Symmetry in Equations
Cool Down: Even More Symmetry
Identify each as function even, odd, or neither. Explain or
show your reasoning.
1. the function k shown here:
A
-2
2. the function f defined by f(x) = 3* + 3-x

Answers

The function f(x) = 3x + 3 - x is neither even nor odd.

The y-axis of the function k's graph is symmetric. This is apparent because, if we reflect any point on the graph across the y-axis, we will obtain a second point on the graph. For purposes of formal definition, the function k is even since k(-x) = k(x) for every x within the range of k.

If the function f(x) = 3x + 3 - x fits the requirements for even or odd functions, we may determine whether it is even, odd, or neither.

Being symmetric around the y-axis means that an even function has f(-x) = f(x) for every x falling inside its domain.

An odd function is symmetric around the origin, which means that for any x falling within the domain of f, f(-x) = -f(x).

We evaluate f(-x) and f(x) to see if they are equivalent in order to determine whether f(x) is even:

f(x) = 3x + 3 - x = 2x + 3 while f(-x) = 3x + 3 - x = -2x + 3

The function f(x) is not even since f(-x) is not equal to f(x).

We assess f(-x) and -f(x) and see if they are equivalent to determine whether f(x) is odd:

F(x) = -3(x) + 3(x) - (x) = -2x + 3 F(x) = -(3x + 3(x) - x) = -2x - 3

The function f(x) is not weird since f(-x) does not equate to -f(x).

The function f(x) = 3x + 3 - x is therefore neither even nor odd.

To know more about Symmetry Equations visit:

https://brainly.com/question/30104002

#SPJ1

What are the transformations of the function?

Answers

1. Vertical Shift: f(x) + 1 = 2(1/3)ˣ + 2, 2. Horizontal shift: f(x - 2) = 2(1/3)ˣ⁻² + 1, 3. Vertical stretch/compression: 3f(x) = 6(1/3)ˣ + 3, 4. Horizontal stretch/compression: f(2x) = 2(1/3)²ˣ + 1.

Describe Translation?

In two-dimensional geometry, a translation can be described as moving a point or a shape horizontally, vertically, or diagonally. To translate a shape, we can move each of its points by the same vector. For example, to translate a square 3 units to the right and 2 units up, we can move each of its four vertices 3 units to the right and 2 units up.

In three-dimensional geometry, a translation can be described as moving an object in the x, y, or z direction. To translate an object, we can move each of its points by the same vector. For example, to translate a cube 2 units in the x-direction, 3 units in the y-direction, and 4 units in the z-direction, we can move each of its eight vertices by the vector (2, 3, 4).

The function f(x) = 2(1/3)ˣ + 1 can be transformed using different techniques, such as shifting, stretching, or reflecting. Here are some possible transformations:

Vertical shift: Adding a constant to the function shifts the entire graph vertically. For example, adding 1 to f(x) shifts the graph up by 1 unit. The new function is:

f(x) + 1 = 2(1/3)ˣ + 2

Horizontal shift: Adding or subtracting a constant to the input variable x shifts the graph horizontally. For example, replacing x with x - 2 shifts the graph to the right by 2 units. The new function is:

f(x - 2) = 2(1/3)ˣ⁻² + 1

Vertical stretch/compression: Multiplying the function by a constant stretches or compresses the graph vertically. For example, multiplying f(x) by 3 stretches the graph vertically by a factor of 3. The new function is:

3f(x) = 6(1/3)ˣ + 3

Horizontal stretch/compression: Multiplying or dividing the input variable x by a constant stretches or compresses the graph horizontally. For example, replacing x with 2x stretches the graph horizontally by a factor of 1/2. The new function is:

f(2x) = 2(1/3)²ˣ + 1

These are some of the possible transformations of the function f(x) = 2(1/3)^x + 1. By applying one or more of these transformations, we can obtain a new function that represents a shifted, stretched, or reflected version of the original function.

To know more about function visit:

https://brainly.com/question/29198392

#SPJ1

which of the following is not consistent with assumptions for the independent-measures anova? a. the populations from which the samples are selected must have equal variances. b. the populations from which samples are selected must be normal, especially as sample sizes decrease. c. the observations within each sample must be independent. d. the populations from which samples are selected must be normal, especially as sample sizes increase.

Answers

The populations from which the samples are selected must not be equal variances, which is not consistent with assumptions for the independent-measures ANOVA.

Therefore, option A is the correct answer.

Independent-measures ANOVA Assumptions for the independent-measures ANOVA are listed below.

The one which is not consistent with the independent-measures ANOVA is described below:

The populations from which the samples are selected must have equal variances.

The populations from which samples are selected must be normal, especially as sample sizes decrease.

The observations within each sample must be independent.

The populations from which samples are selected must be normal, especially as sample sizes increase.

ANOVA is a statistical method that compares three or more groups' means to determine whether the differences are significant.

Independent Measures ANOVA (also known as One-Way ANOVA) compares the means of three or more unrelated groups to determine whether there are any significant differences.

When dealing with Independent Measures ANOVA, the following assumptions must be met:

Assumptions for the Independent-Measures ANOVA:

Independence: Observations in each group should be independent from one another.

Normally Distributed Populations:

Each group's scores should come from a normally distributed population.

Homogeneity of Variance: Each group's variance should be similar.

Mean Equality: Each group's means should be equal.

The above-mentioned assumptions are consistent with independent-measures ANOVA.

However, the populations from which the samples are selected must not be equal variances, which is not consistent with assumptions for the independent-measures ANOVA.

For similar question on variances.

https://brainly.com/question/15858152

#SPJ11

Which characteristic of big data is referred with the following statement: Data also comes in all types, forms and granularity, both structured and unstructured.
A. Veracity
B. Volume
C. Variety
D. Volume

Answers

C is Correct

C. Variety is the characteristic of big data that is referred to in the following statement: "Data also comes in all types, forms and granularity, both structured and unstructured."What is big data?Big data is a term used to describe vast, intricate data sets that cannot be processed or analyzed using conventional data processing tools. It is a term used to describe large amounts of structured, unstructured, and semi-structured data that cannot be processed using conventional processing methods. It is characterized by volume, speed, and complexity, and it necessitates new technologies, procedures, and strategies to manage, store, and analyze it.There are four essential characteristics of big data: volume, velocity, variety, and veracity, referred to as the four Vs. The different characteristics of big data are:Variety: Big data comes in all types, forms, and granularity, both structured and unstructured. It may include everything from text, images, and video to social media and IoT data. It can be a challenge to store, manage, and analyze data of such variety. Therefore, organizations must use tools and techniques that can handle all kinds of data.Velocity: The pace at which data is created and generated is referred to as velocity. In real-time, big data is collected and handled. The quicker you can process the data, the more valuable it becomes. Stream processing, complex event processing (CEP), and real-time analytics tools are examples of technologies that can handle high-velocity data.Volume: Big data is characterized by a large volume of data. Every day, we produce a tremendous amount of data that needs to be stored, processed, and analyzed. The huge data sets can make data analysis and management challenging.Veracity: The precision, relevance, and dependability of the data are referred to as veracity. Before processing and analyzing, big data must be checked for errors and inconsistencies. Quality checks and data cleansing procedures should be implemented to maintain data accuracy and reliability.

Learn more about Big Data

brainly.com/question/30165885

#SPJ4

Can someone explain this without confusing me? Thank you ​

Answers

Answer: well f(x) equeals a funtction

your x is a given so all you have to do is plug in the given (X) to the equation given f(x)=x/2

Step-by-step explanation:

example for the first slot:

F(x)=-4

      ——

         2

Answer:

Below

Step-by-step explanation:

Here is how to do the first one....the others are similar

f(x) = x/2       when x = -4,     f(-4) = -4/2 = -2    (just put the number in for 'x')

                 when x = - 2 ,   f(-2) =  -2/2 = -1

              when x = 0 ,     0 /2 = 0

           when x = 1 ,        1/2 = 1/2

        when x = 6 ,         6/ 2 = 3

So the answers across the bottom for the first one are

    -2     -1     0    1/2     3

I think you can do the rest.....just put the number value in for 'x' in the equation....

20. How many four-digit positive integers are divisible by both 12 and 20, but are not

divisible by 16?

(A) 111

(B) 113

(C) 125

(D) 150

(E) 149

Answers

The number of four-digit numbers that are divisible by both 12 and 20 but are not divisible by 16, obtained by finding the least common multiples of 12 and 20 are 150. the correct option is therefore option (D)

(D) 150

What is a least common multiple?

The least common multiple (LCM) of two or more integers is the smallest positive integer that is a multiple of each of the integers.

The numbers 12, and 20 are divisible by 4, therefore, numbers that are divisible by 12 and 20 are also divisible by 4. Therefore, the number of four-digit numbers that are divisible by 4 are found as follows;

The number of 4 digit positive numbers between 1000 to 9999 are 9000 four-digit positive numbers.

The number of multiples of 4 between 1000 and 9999, includes the first number 1004 and the last number 9996

The number of four-digit positive integers that are divisible by 4 therefore is; (9996 - 1004)/4 + 1 = 2250

The least common multiple of 4, 12 and 20 is 60, therefore;

The number of four digit numbers that are divisible by 60 are can be found as follows;

The first number is 1020, the last number is 9960

Therefore, the number of 4 digit numbers that are divisible by 60 are;

(9960 - 1020)/60 + 1 = 150

The number of 4 digit numbers that are divisible by 12 and 20 but is not divisible by 16 is divisible by 4 and 15 that have a least common multiple of 60

The number of four-digit numbers that are divisible by 4 and 15 is also divisible by 60, therefore, the number of 4 digit numbers that are divisible by 4 and 15 are also 150

Therefore, the number of four-digit numbers that are divisible by 12 and 20 but are not divisible by 16 is 150.

The correct option is; (D) 150

Learn more on least common multiples of two or more numbers here: https://brainly.com/question/1621818

#SPJ1

You randomly choose one of the tiles shown. Find the number of ways choosing an even number can occur.

An even number can occur

Answers

The number of ways choosing an even number using factorial can occur is 6! or 720.

Describe a factorial.

In mathematics, a factorial is a function that is applied to a non-negative integer, represented by the exclamation mark (!) symbol. The result of applying the factorial function to a number n, written as n!, is the product of  integers from 1 to n.

For example, 4! is equal to 4 x 3 x 2 x 1, which equals 24.

Now,

Given number are 1,2,3,4,5,6,7,8,9,10,11,12

from these numbers even numbers are 2,4,6,8,10,12

total even numbers=6

then, number of ways of selecting a even number=6! or 6*5*4*3*2*1

=720

Hence,

          The number of ways choosing an even number using factorial can occur is 6! or 720.

To know more about factorial visit the link

brainly.com/question/29594894

#SPJ1

1. At a certain restaurant in​ Ohio, the number of minutes that diners spend at the table has a major impact on the profitability of the restaurant. Suppose the average number of minutes that diners spend at a table for dinner at the restaurant is 97 minutes with a standard deviation of 18 minutes. Assume the number of minutes diners spend at their table follows the normal probability distribution. Complete parts a through d.
a. Calculate the probability that the average number of minutes that diners spend at their table for dinner will be less than 100 minutes using a sample size of 9 tables.
​(Round to three decimal places as​ needed.)

Answers

With a sample of 9 tables, the probability that diners would spend fewer than 100 minutes at their table during dinner is [tex]0.8413[/tex], or around [tex]84.13[/tex] percent.

What is the probability formula?

The ratio of beneficial results to all beneficial results in the population is a common way to define probability.

How is Probability Applied in Real-World Situations?

Probability has many uses in both analysis and gaming. Probability is used in sectors of real life and business where making predictions is important. The utilisation of probabilistic principles was necessary for forecasting market prices and cricket team performance.

With the values from the problem substituted, we obtain,

[tex]z = (100 - 97) / (18/\sqrt{9} ) = 1[/tex]

Using a standard normal distribution table or calculator, we find that the probability of getting a z-score less than [tex]1[/tex] is [tex]0.8413[/tex].

Therefore tables is [tex]0.8413[/tex] or approximately [tex]84.13[/tex]%.

To know more about probability visit:

https://brainly.com/question/11234923

#SPJ1

Solve for side length x. Round to the nearest tenth.

Answers

Answer:

x = 3.1 Proofs attached to answer

Step-by-step explanation:

Proofs attached to answer

Answer:

3.1 rounded to the nearest tenth

Step-by-step explanation:

Using Sine Rule;

Sin A / a = Sin B / b = Sin C / c

Which is also as Sin M / m = Sin N / n = Sin P / p

Working with M and N;

Sin 15 / x = Sin 90 / 12

Sin 15 / x = 1 / 12 (cross multiply)

Making x the subject of the formula

x = 12 * Sin 15 = 3.10 = 3.1 rounded to the nearest tenth

In a video store, dvd that sells for $15 is marked 10% off. What is the amount of the discount

Answers

In a video store, a DVD that sells for $15 is marked 10% off. The amount of discount is $1.50.

If the DVD is marked 10% off, it means the price of the DVD has been reduced by 10% of its original price.

To calculate the amount of the discount, we need to find 10% of the original price. We can do this by multiplying the original price by 10% written as a decimal:

10% as a decimal = 0.10

Amount of discount = 0.10 x $15 = $1.50

Therefore, the amount of the discount on the DVD is $1.50.

To learn more about discount, refer:-

https://brainly.com/question/3541148

#SPJ4

For which values of x is the expression undefined?
x^2-36/x-9
​

Answers

The expression is undefined when x = 9. the expression will be undefined when x-9 = 0.

To find the values of x for which the expression is undefined, we need to look for values of x that would make the denominator of the expression equal to zero. In this case, the denominator is x-9. Therefore, the expression will be undefined when x-9 = 0. Solving for x, we get x = 9.

When x is equal to 9, the denominator becomes zero, which would make the expression undefined as dividing by zero is undefined in mathematics. For all other values of x, the expression is defined and can be evaluated.

We can verify this by substituting x = 9 in the expression and observing that it becomes (9² - 36)/(9-9), which is (81-36)/0, and division by zero is undefined.

Learn more about Expressions:

https://brainly.com/question/1859113
#SPJ4

Complete Question:

For which values of x is the expression undefined?

[tex]x^2-36/x-9[/tex]

In the given figure, DE intersects the congruent sides of isosceles triangle AABC and is parallel to AB. What is the value of x? (a) 10 (b) 18 (d) 50 (e) 60 D(x+4) (54-2x)​

Answers

The value of x in this isosceles triangle is equal to: D. 50.

What is an isosceles triangle?

In Mathematics and Geometry, an isosceles triangle simply refers to a type of triangle with two (2) sides that are equal in length and two (2) equal angles.

This ultimately implies that, an isosceles triangle comprises two (2) side lengths that are equal and two (2) angles with the same magnitude.

In isosceles triangle ABC, side DE intersects its congruent sides and is parallel to side AB. Therefore, there are two sides that are congruent (equal) and as such we have;

(54 - 2x)° = (3x + 4)°

3x - 2x = 54 - 4

x = 50

Read more on isosceles triangle here: brainly.com/question/19238666

#SPJ1

Please help me thanks

Answers

From the given question, the value of the height of the cone is given by 57.3 centimeters to the nearest 1 decimal place: Option B

How to determine the volume of a cone?

We should note that a cone is a three-dimensional geometric figure with a flat and curved surface pointed towards the top.  It is formed by using a set of line segments or the lines which connects a common point, called the apex or vertex, to all the points of a circular base(which does not contain the apex)

The volume of the cone is given by the formula

Volume = 1/3πr²h

Where Volume = 1500 centimeters cube, radius = 5 cm, π = 22/7

1500 = 1/3*22/7*5*5*h

1500 = (22*5*5*h)/3*7

Simplifying the expression further we have

1500 = 550h/21

1500(21) = 550h

31500 = 550h

Making h the subject of the relation we have

h = 31500/550

h= 57.272727...

h= 57.3 to one decimal place

Therefore the height of the cone is 57.3 cm

Learn more about a cone on https://brainly.com/question/16394302

#SPJ1

Other Questions
The moon snail is...a. a carnivore that uses propodium to plow forwardb. know to live on mud and sand flatsc. a species of abaloned. a species of cowrye. choice a & b are correctf. choice b & c are correct g. choice a & c are correcth. choice a & d are correct Consider a perfectly competitive market with a price of $21, where each firm has a cost function of c(q) = 10+q+2/3 q^2a) Is the market in long-run equilibrium? Explain why or why not. b) What is the value to a firm of a cost-saving process innovation that reduces the cost function to c(q) = 5_0.5q^2? c) Illustrate this innovation graphically using a well-labeled diagram. for each of the wages listed in the following table, determine the quantity of labor demanded, the quantity of labor supplied, and the direction of pressure exerted on wages in the absence of any price controls. 1. Explain how globalization fueled the financial crises of 2008 2. What was the role played by governments around the world in the crisis, in each case suggest how they would have helped forestall the occurrence of the crisis 1.9 zylab training basics Which of the following statements correctly describes the problems caused by invasive species like the Burmese python and European rabbit?A They create more habitats for native species.B They create a new food source for native species.C They bring diseases to the area.D They overpopulate and compete with native species for both space and food An item is regularly priced at $70. Shen bought it on sale for 20% off the regular price. How much did Shen pay? the alvin secretarial service procures temporary office personnel for major corporations. they have found that 50% of their invoices are paid within ten working days. a random sample of 12 invoices is checked. what is the probability that exactly 5 of the invoices will be paid within ten working days? round your answer to four decimal places. Use your line plot to answer the question below.How much more white paint was on the palette with the most white paint than on the palette with the least white paint?Write your answer as a fraction, mixed number, or whole number. You will hear lorraine describing her schedule. Listen carefully and indicate whether each statement is vrai or faux What are Harriet Tubmans 3 character traits? Your attorney says that you have the preponderance of the evidence in your civil case. How do you interpret thatstatement? what effect did the exposure to many different ethnic groups have on Colin Find the length of MN. Round to the nearest tenth of a foot. Which of these could be the area of Circle B? b. About 300 in2c. About 900 in2d. About 2,700 in2 If the angle 405 rotates 180 clockwise, what is the new measurement of the co-terminal angle?___ Can someone help me figure out how to do this? Whats the answer? Political CartoonsLook at the political cartoons at the bottom of the assignment. What do you see and what do you think the artist is trying to say? Make sure you write your answers in complete sentences. Cartoon 21. What are the key elements? (people, objects, labels, symbols, etc.) in the cartoon? What does each element represent?2. What is the cartoons message? How does the cartoonist try to persuade the reader?3. Do you find the political cartoon persuasive? Why or why not?4. Do you think any groups of people might be offended by the cartoon? What groups might be offended, and why? The assets and liabilities of a landscaping business are listed below.What is the net worth of the landscaping company?A) $126,790B) $187,205C) $282,799D) $470,004 I need help again this is really important this is due tomorrow