4. Write the expression in
words.
h - 3

Answer:

a.

b. 35/100 of 76 = 26 to 27 remained

c.
d. statistic

e. experiment

f. I don't think so

Step-by-step explanation:

When σ is known, hypothesis tests are performed for one population mean. The one-mean z-test, or simply z-test, is a hypothesis test carried out for a single population mean when the population standard deviation is known.

A data distribution's spread is measured by standard deviation. It calculates the average separation between each data point and the mean.

Whether we consider the data to be a population unto itself or a sample of a broader population affects the method we use to calculate standard deviation.

Statistics is the parent topic for the Population Mean notion. In a nutshell, statistics addresses the issues of gathering data as well as its analysis, interpretation, and presentation. The population mean formula calculates the average of all the values in the population or set of data.

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The required expressions are ¬ ∃x(F(x, Ralph)), ∀xF(x, Fred), and  ∀x∃yF(x,y). Here, ¬ means negation, ∃ means existential quantifier, and ∀ means universal quantifier.

One or more variables that are defined on a particular domain are expressed by a predicate. By giving the variable a value or by quantifying it, it is possible to turn a predicate with variables into a proposition.

There are two quantifiers used in this they are (i) existential quantifier which is represented by ∃ and (ii) universal quantifier which is represented by ∀.

For, the proposition, "Nobody trusts Ralph", the quantifier is written as      ¬ ∃x(F(x, Ralph)).

For the proposition, "Everybody trusts Fred", the quantifier is written as ∀xF(x, Fred).

For the proposition, "Somebody trust everybody", the quantifier is written as ∀x∃yF(x,y).

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Answer: To make the piecewise function continuous for all x, we need to make sure that the function values and the function slopes at the boundaries (-1 and 2) are the same for each piece.

For x = -1:

F(-1) = -6 (from the first piece)

F(-1) = A(-1) + 2 = -A + 2 (from the second piece)

So, to make the function continuous at x = -1, we need to set -6 = -A + 2, which gives us A = -8.

For x = 2:

F(2) = -x^2 + Bx + 14 (from the third piece)

F(2) = A(2) + 2 = 2A + 2 (from the second piece)

So, to make the function continuous at x = 2, we need to set -4 + 2B + 14 = 2A + 2, which gives us B = -5.

Now we can write the function with the constants that we found :

F(x) = -6 if x < -1

-8x + 2 if -1 ≤ x ≤ 2

-x^2 - 5x + 14 if x > 2

This function is continuous for all x and the values and slopes match at x = -1 and x = 2.

Step-by-step explanation:

Answer:

16.58

Step-by-step explanation:

as you can see from the graph, there's a monthly fixed cost on Y axis.  so you need to figure out 1: how much per minute. and 2. the monthly fixed fee.  you've got 2 scenarios = 2 equations, for 2 variables. so you can solve both.

assume: x=per min rate; m = monthly fixed cost.

1. 14.06 =52x+m

2. 17.18 =78x+m

use equation 2 minus equation 1 & you get

3.12 = 26 x.  so x = 0.12

plug this into equation 1: 14.06 =52*0.12 +m so m=7.82

now for 73 mins the cost = 73*0.12 +7.82 =16.58

Answer:

f(-5) = 4

Step-by-step explanation:

[tex]f(x)=|x+1|\\f(-5)=|-5+1|=|-4|=4[/tex]

Answer:

Step-by-step explanation:

The top left angle = 52⁰ - also right angle = 52⁰.  ( alternate angles of parallel l;ines).

So, x = 180 - 2(52) = 180-104

= 76 degrees.

Answer:

x =  [tex]\frac{4}{5}[/tex]

Step-by-step explanation:

2x - 3y = 7 → (1)

- 4x + y = - 5 → (2)

multiplying (2) by 3 and adding to (1) will eliminate y

- 12x + 3y = - 15 → (3)

add (1) and (3) term by term to eliminate y

- 10x + 0 = - 8

- 10x = - 8 ( divide both sides by - 10 )

x = [tex]\frac{-8}{-10}[/tex] = [tex]\frac{4}{5}[/tex] (= 0.8 )

Answer:

78cm  78.125

Step-by-step explanation:

Answer: 78.13

Step-by-step explanation:

you start with 40cm and find 25% of that and add it to 40cm. Or you can do 1.25x40=50 That would be July, so repeat to get 50x1.25=62.5 to get august, then again to get 62.5x1.25=78.13

Circumference of circle = 7π yards

The correct option is B.

A circle is a two-dimensional figure formed by a set of points that are at a constant or at a fixed distance (radius) from a fixed point (center) on the plane. The fixed point is called the origin or center of the circle and the fixed distance of the points from the origin is called the radius.

Given,

Segment drawn from one point on the circle through the center to another point = diameter of circle = 7 yards

Circumference of the circle = π × Diameter

                                              = 7π yards

Hence, 7π yards is the circumference of the circle

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Answer:

b

Step-by-step explanation:

The difference between 4.507 and 4.517 can be expressed as -0.010.

The concept that will be used here is substraction. The outcome of subtracting one integer from another is difference. While we frequently discuss differences in how objects appear, feel, or even taste, mathematics demonstrates how much two numbers vary from one another in terms of quantity. Difference is what is left behind after subtracting one number from another.

the outcome of subtraction of two numbers. the difference between two numbers. For instance: There is a 5 difference between 8 and 3.

We were to find the difference between 4.507 and 4.517 whichg implies the substraction between the values and can be done as

(4.507 - 4.517)= -0.010

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complete question:

What is the difference between 4.507 and 4.517

An equation in point slope form for the line that passes through the given point and is perpendicular to the graph of each equation is y=2/3 x²+4x

A mathematical equation is a formula that uses the equals sign ('=') to express the equality of two expressions. The meanings of the word equation and its cognates in other languages can vary slightly. For instance, an equation in English is any well-formed formula consisting of two expressions related by an equals sign, while an equation in French is defined as containing one or more variables.

step 1

y=2/3+4

y=2/3 x²+4x

y=m x+ b

step 2

y= y coordinate

m=slope

x=x coordinate

b=y intercept

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The rational function in the simplest form of (f/g)(x)  is x / 5x - 2.

Composite functions are when the output of one function is used as the input of another. A typical example of a composite function is (f/g)(x).

Therefore, let's solve the rational function in the simplest form.

Hence,

f(x) = -x

g(x) = -5x + 2

(f/g)(x) = f(x) / g(x)

Therefore,

(f/g)(x) = - x / -5x + 2

Hence,

(f/g)(x) = - x / - (5x - 2)

Finally,

(f/g)(x) = x / 5x - 2

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The polynomial function with the given intercepts of the hirzontal axis can be written as:

p(x) = (x + 7)*(x - 8)*(x - 15)

We know that a polynomial of degree N whose leading coefficient is 1 and has the zeros {x₁, x₂, ...}

Then the polynomial can be written as:

p(x) = (x - x₁)*(x - x₂)*...

Here the zeros (also called intercepts of the horizontal axis, like on this case) are {-7, 8, 15}

Then wecan write the polynomial with these zeros as:

p(x) = (x - (-7))*(x - 8)*(x - 15)

p(x) = (x + 7)*(x - 8)*(x - 15)

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The equation of plane is x - 3y - 4z = 27.

a plane produced by the application of vectors perpendicular to a normal. The implication of this is that, given a vector a, b, c, we may deduce that all planes perpendicular to it have the form ax+by+cz=d and that any surface with this form is a plane perpendicular to a, b, c.

The equation for a plane perpendicular to a given line with direction ratios a, b, and c> and passing through a point is a(x-x1) + b(y-y1) + c(z-z1) = 0. (x1, y1, z1).

The equation of the plane traveling through the points x, y, and z on a plane perpendicular to the line whose parametric equation is provided

Equation of a plane through the point (-4,-3,8) is

a(x - 4) + b(y - 3) + c(z + 8) = 0

Since it is perpendicular to the line :

x = -4+t, y=-3-3t, z= -4t,

t = x + 4 = -y - 3 / 3 = -z/4

therefore coefficients a, b, c must be proportional to 1, - 3 & (-4) respectively.

Therefore, putting the values of a, b & c in eq.(1), we get the required equation of the plane as ;

λ(x - 4) -3 λ(y - 3) - 4λ(z + 8) = 0 (λ is a constant)

⇒ x - 4 - 3y + 9 -4z - 32 = 0

⇒ x - 3y - 4z = 27

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Answer: I think it is -7 I'm not exactly sure but that's what I think please take someone else's answer just in case.

Step-by-step explanation:

The augmented matrix of the solution to the system of equations is x = 4 and y = -1/2.

The augmented matrix of the system of equations 2x + y = 8 and 3x - y = 7 can be written as follows:

|2x + y = 8 |

|3x - y = 7 |

This can be rewritten in matrix form as:

|2 1 | |x | | 8 |

|3 -1| |y | | 7 |

To solve this system of linear equations, we can use the Gauss-Jordan elimination method. First, we add the first row to the second row to eliminate the x coefficient from the second equation:

|2 1 | |x | | 8 |

|0 -2| |y | | 1 |

Then, we can divide the second row by -2 to get the coefficient of y to be 1:

|2 1 | |x | | 8 |

|0 1 | |y | |-1/2|

Finally, we can subtract the second row from the first row to eliminate the y coefficient from the first equation:

|2 0 | |x | | 8/2|

|0 1 | |y | |-1/2|

Therefore, the solution to the system of equations is x = 4 and y = -1/2.

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Answer:

9x + 7

Step-by-step explanation:

Add 4x + 1 to 5x + 6

in an algebraic expression is:

4x + 1 + 5x + 6

To simplify, combine like terms. This means add the x terms together and add the constants (plain number- - the 1 and 6) together.

4x + 1 + 5x + 6

= 4x + 5x + 1 + 6

= 9x + 7

If k is the number of classes and n is the number of observation then for class intervals, select the smallest k such that 2k >= n using statistics.

n = 36

2^5 = 32< 36

2^6 = 64 > 36

So k = 6

a) Frequency distribution: Answer A.

Class interval                 Frequency

0 to less than 1000        11

1000 to less than 2000        9

2000 to less than 3000 3

3000 to less than 4000 3

4000 to less than 5000 5

5000 to less than 6000 5

b) Relative frequency distribution: Answer B.

Class interval                        Relative frequency

0 to less than 1000            11 / 36 = 0.306

1000 to less than 2000            9 / 36 = 0.250

2000 to less than 3000    3 / 36 = 0.083

3000 to less than 4000     3 / 36 = 0.083

4000 to less than 5000     5 / 36 = 0.139

5000 to less than 6000     5 / 36 = 0.139

c) Cumulative relative frequency:

Class interval         Cumulative Frequency

less than 1000         11

less than 2000         20

less than 3000         23

less than 4000         26

less than 5000          31

less than 6000          36

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Qualitative data is data that cannot be counted easily using numbers is not have the correct definitions.

Qualitative data is used to address the research questionnaire regarding whats and how many(s) or also for research procedures to quantify a problem. This data can be used to compare or count data on a numerical scale.

This type of research typically involves in-depth interviews, focus groups, or observations in order to collect data that is rich in detail and context. This data is used for Qualitative research which is very helpful when understanding social reality and the attributes, beliefs, and motivations of people.

The main importance of this kind of project come into the limelight when someone is trying to understand the reason behind one's beliefs or behaviors.

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The measure of ∠P is 96°.

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

Example: 2 + 3x + 4y = 7 is an expression.

We have,

∠P and ∠R are alternate angles.

Alternate angles are equal.

So,

∠P = ∠R

2x = x + 48

2x - x = 48

x = 48

Now,

∠P = x + 48

∠P = 48 + 48

∠P = 96

Tus,

The value of ∠P is 96°.

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The output column, S, of the given input-output table was created from the student ID 21444368 using an algorithm where if the student ID digit is an even integer, a 0 is placed in the corresponding row of column S, and if the student ID digit is an odd integer, a 1 is placed in the corresponding row of column S.

Student ID: 81725225

P Q R S

1 1 1 0

1 1 0 1

1 0 1 1

0 1 0 0

0 0 1 1

0 1 1 0

0 0 0 1

Student ID: 81725225

P: The first digit of my student ID is 8 so it is an even integer, therefore I place a 0 in row 1 of column P.

Q: The second digit of my student ID is 1 so it is an odd integer, therefore I place a 1 in row 2 of column Q.

R: The third digit of my student ID is 7 so it is an odd integer, therefore I place a 1 in row 3 of column R.

S: The fourth digit of my student ID is 2 so it is an even integer, therefore I place a 0 in row 4 of column S.

The resulting table is:

P Q R S

1 1 1 0

1 1 0 1

1 0 1 1

0 1 0 0

0 0 1 1

0 1 1 0

0 0 0 1

The output column, S, of the given input-output table was created from the student ID 21444368 using an algorithm where if the student ID digit is an even integer, a 0 is placed in the corresponding row of column S, and if the student ID digit is an odd integer, a 1 is placed in the corresponding row of column S. The same algorithm was applied to my student ID 81725225, resulting in the table shown above.

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The fact that some people who smoked never develop lung cancer does not disprove the evidence.

The fact that some people who have never smoked develop lung cancer does not disprove the evidence linking smoking to lung cancer.

Smoking is a major risk factor for lung cancer, and the overwhelming majority of people who are diagnosed with the disease are smokers or former smokers. However, it is important to note that other factors, such as exposure to radon and other pollutants, can also increase the risk of lung cancer, and that some people may be more genetically susceptible to the disease. So, it is possible for people who have never smoked to develop lung cancer as well.

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Answer: As Mrs Lopez required 40 ounce

Step-by-step explanation:

For the rectangular parking area of the shopping center shown, an equation which says that the area is 30,000 yd² is: A. x(2x + 200) = 30,000.

Mathematically, the area of a rectangle can be calculated by using this formula:

A = LW

Where:

From the information provided about the rectangular parking area of the shopping center shown in the image attached below, we have the following dimensions:

Length = x

Width = 2x + 200

Substituting the given points into the area of rectangle formula, we have the following;

30,000 = x × (2x + 200)

30,000 = x(2x + 200) ⇒ (required equation).

30,000 = 2x² + 200x.

2x² + 200x - 30,000 = 0.

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The solution for the system of equations 8x + 3y = 4 and 2x + y = 2 by elimination are x = -1, y = 4

we shall write the equations as:

8x + 3y = 4...(1)

2x + y = 2...(2)

multiply equation (2) by 3 to get equation (3)

3(2x + y) = 3 × 2

6x + 3y = 6...(3)

subtract equation (1) from (3) to eliminate y

6x + 3y - 8x - 3y = 6 - 4

-2x = 2

divide through by -2

x = -1

put the value -1 for x in equation (2) to get y

2(-1) + y = 2

-2 + y = 2

y = 2 + 2 {add 2 to both sides}

y = 4

Therefore, the solution for the system of equations 8x + 3y = 4 and 2x + y = 2 by elimination are x = -1, y = 4.

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Answer: Quadrilateral

Step-by-step explanation:

hexagon: 6 sides

octagon: 8 sides

quadrilateral: 4 sides

triangle: 3 sides

The quadrilateral is the only one that makes sense.