Answer:
No
Step-by-step explanation:
No because if a = 21, then 7 * 21 = 147 and 147 is not 28.
Martin has read 70% of a book. He has 27 more pages to finish. How many pages are there in the book?
Answer:
90 pages
Step-by-step explanation:
Given: 70% of a book, 27 more pages
To find: How many pages there are in the book
Solution: If 70% is 27,
27 to the 20 it stands for is 20
70 + 20 = 90
Thus, there are 90 pages left in the book
Is this right? Please help me
Answer:
Yes.
Step-by-step explanation:
Every tenth is equal to ten one-hundreths/10%. So, since 0.2 is essentially a different way to write 20%, 20% of customers wanted cheese and no chili.
9y - 2x = 0 in slope intercept form.
Answer:
y=2/9x
Step-by-step explanation:
I hope this helps
Step-by-step explanation:
9y-2x=0
9y=2x
y=(2/9)x
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Answer:
According to two brainly answer choices it should be Choice A.
15/6
Step-by-step explanation:
SOURCES:
https://brainly.com/question/16451231
https://brainly.com/question/16811984
THIS IS THE WORK OF ANOTHER BRAINLY USER NOT MINE
In this question, we are to get the total number of hours that Irina used in watching the movie which does not include the term used for airing the commercials.
Now to calculate this, let us first take a look at the shaded segmented bar. We can see that out of the 6 horizontal bars, 5 were shaded. What this means is that 5/6 of the hours went into airing the movie while 1/6 of the hour went into airing commercials
Now, mathematically the number of hours she viewed the movie without the commercials can be calculated by adding all these 5/6 hour in the 3 hours
Mathematically that would be 5/6 + 5/6 + 5/6 = 3 (5/6) or simply 3 * 5/6 = 5/2 = 15/6 hours
The lengths, in cm, of the sides of a triangle are 3x – 5, 2x – 1 and x + 1 (a) Write down an expression, in terms of x, for the perimeter of the triangle.
Answer: [tex]6x-5[/tex]
Step-by-step explanation:
Given
The side lengths of a triangle are [tex]3x-5, 2x-1,\text{and}\ x+1[/tex]
Perimeter(P) is the sum of the side length of the triangle i.e.
[tex]\Rightarrow P=3x-5+2x-1+x+1\\\Rightarrow P=6x-5[/tex]
Therefore, the perimeter of the triangle is [tex]6x-5[/tex]
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determine the missing length in your right triangle using the Pythagorean theorem. round your answer to the nearest 10th if necessary
Answer:
21.4
Step-by-step explanation:
13^2 + 17^2 = c^2
169 + 289 = c^2
458 = c^2
The square root of 458 is 21.4.
The Diaz family bought 7 bags of cookies. Each bag had 14 cookies. They have since eaten 29 of the cookies. How many cookies do they have left?
Answer:
They have 69 cookies left.
Step-by-step explanation:
7 x 14 = 98
98 - 29 = 69
The heights of five-year-olds are Normally distributed with a mean of 42.5 inches and a standard deviation of 2.5 inches. A random sample of 16 five-year-olds is taken and the mean height is recorded. What would be the standard deviation of the sampling distribution of all possible samples of size 16?
0.16
0.63
2.5
2.66
Answer:
0.63
Step-by-step explanation:
As a result of aerobic respiration, the composition of the air that is breathed in and the air that is breathed out changes
Answer:
The given statement is true
Step-by-step explanation:
Complete question
As a result of aerobic respiration, the composition of the air that is breathed in and the air that is breathed out changes. Is this true
Solution
Yes the composition of gases inhaled and exhaled are of different composition.
We intake oxygen from atmosphere while breathing in. However, while breathing out we release carbon dioxide (CO2).
Hence the given statement is true.
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Answer: C
Step-by-step explanation:
divide 342 by 7 and round to the nearest whole number
Students at a middle school are divided into 6th, 7th, and 8th grades. A random sample of 15 students from each grade is chosen.
Which sampling method best describes this scenario?
A) simple random sample
B) stratified random sample
C) systematic random sample
D) voluntary response sample
Answer:
B. Stratified random sample is the correct answer
The best sampling method that describes the scenario where students from each grade (6th, 7th, and 8th) are randomly chosen in a sample of 15 students from each grade is B) stratified random sample.
In a stratified random sample, the population is divided into distinct groups or strata based on certain characteristics, and then a random sample is taken from each stratum. In this case, the distinct groups are the different grade levels (6th, 7th, and 8th grades). By randomly selecting 15 students from each grade, we ensure representation from each grade level in the sample.
This method allows for a more accurate representation of each grade level within the sample and can provide valuable insights into the characteristics and experiences of students in each grade.
To know more about sampling method click here :
https://brainly.com/question/15604044
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Write an expression to represent "8 less than the product of 3 and j"
Solve for DG
HELP PLEASE
Step-by-step explanation:
32/24=40/DG
Reducing the fractions to simpler fractions
4/3=40/DG
Cross multiply
4DG=40*3
4DG=120
DG =120/4
DG=30
i need help with this
Answer:
A) 9 inches per minute
Step-by-step explanation:
36 inches in 4 minutes
36/4 = 9 inches per minute
Where should 3V49 be on the number line?
Answer:
Step-by-step explanation:
Note that 49 is a perfect square: 7² = 49.
Therefore, 3√49 = 3(7) = 21.
Note: Brainly makes accessible to you a set of special math characters. Have a friend show you how to find this menu and select the " √ " operator.
Plsss help I’m super stuck on this
Answer:
its b
Step-by-step explanation:
took the quiz
Answer:
I would go with D
Step-by-step explanation:
You can look at the graph and answer it
please help me !!!!!!!!!!!!
Answer:
The answer is D
Step-by-step explanation:
A 180 rotation on 1,1 which is the center will rotate it onto itself.
What is the sum of an 8 term geometric series if the first term is -11 and the last term is 859,375 and the common ratio is -5
Answer:716,144
Step-by-step explanation:
Given
No of the terms in GP [tex]n=8[/tex]
First-term [tex]a=-11[/tex]
last term [tex]a_n=859,375\quad (ar^{n-1})[/tex]
Common ratio [tex]r=-5[/tex]
The Sum of a GP is given by
[tex]S_n=\dfrac{a(1-r^n)}{1-r}\quad \quad [r<1][/tex]
Put the values
[tex]\Rightarrow S_n=\dfrac{-11(1-(-5)^8)}{1-(-5)}\\\\\Rightarrow S_n=\dfrac{-11\times -390624}{6}\\\\\Rightarrow S_n=\dfrac{42,96,864}{6}=716,144[/tex]
4 = 4 ( x + 10 ) solve for x
Answer:
x = -9
Step-by-step explanation:
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Answer:
x = -9
Step-by-step explanation:
4 = 4(x + 10)
=> 4/4 = x + 10
=> 1 = x + 10
=> x + 10 = 1
=> x = 1 - 10
=> x = -9
The path of a projectile launched from a 26-ft-tall tower is modeled by the equation y = −16t2 + 64t + 26. What is the maximum height, in feet, reached by the projectile?
Answer:
The maximum height of the projectile is 90 ft
Step-by-step explanation:
Here, we want to get the maximum height reached by the projectile
The answer here will be the y-coordinate value of the vertex form of the given equation
so firstly, we have to write the equation in the vertex form
We have this as;
y = -16t^2 + 64t + 26
That will be;
y = a(x-h)^2 + k
y = -16(x-2)^2 + 90
where the vertex of the equation is;
(-h,k)
K
in this case is 90 and thus, that is the maximum height of the projectile
Caleb invested $6,200 in an account paying an interest rate of 7 1/2% compounded
quarterly. Sophie invested $6,200 in an account paying an interest rate of 7 7/8%
compounded monthly. To the nearest dollar, how much money would Sophie have in
her account when Caleb's money has doubled in value?
Which statement is true about rectangular prisms?
A. All rectangular prisms have five faces.
B. The bases are always congruent.
C. The lateral faces are always congruent.
D. All rectangular prisms have three lateral faces.
Answer:
it b
Step-by-step explanation:
Multiply.
-0.2(24)=
-100(-9.287)
Answer:
-0.2(24)= -4.8
-100(-9.287)= -9.287
In a population of adults the proportions of people in various marital status are: Single:35%, Married: 60%, Divorced: 5%. A person is selected at random. If that person is not divorced find the probability that he or she is single.
Answer:
7/20 0r 0.35
Step-by-step explanation:
Probability of been single = percentage of single adult / sum of percentages
sum of percentages = 35 + 60 + 5 = 100
35/100 = 7/20 or 0.35
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what's the area of the circle
Answer:
3.14
Step-by-step explanation:
There are 8 sophomores on the academic team. At the last competition, they each took the math test. Their scores were 82%, 92%, 76%, 72%, 92%, 74%, 80%, and 78%. What was the median math score of the sophomores? 79% 82% 87% 92%
The median of the math scores is = 79%.
You can understand more about calculation of median of a set of numbers below.
Estimation of median scoresThe total number of sophomores is = 8
The percentage score of each sophomore = 82%, 92%, 76%, 72%, 92%, 74%, 80%, and 78%.
To calculate the median of the percentage scores, arrange the scores in ascending order and pick the figure in the middle as the median math score.
72, 74, 76, 78, 80, 82, 92, 92
Here the median is two figures 78, and 80 which are located in the middle. The median is =>78 +80/2
= 158/2 = 79%
Therefore, the median of the math scores is = 79%
Learn more about median calculation here:
https://brainly.com/question/14532771
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A. 79%
edge 2022 :)
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Whats the slope using rise/run?
thank you
Answer:
answer is 7
Step-by-step explanation:
one point is at (1,3) and the other at (0,-4)
to get slope y2-y1 / x2-x1
so -4-3 / 0-1
-7/-1
so answer is 7
Anastasia has been accepted into a 4- year University as an architect student. She was offered a scholarship of $17,800 per year. The cost per year is $17,400 in tuition and fees, $10,350 for room and board, and 850 for books. What would the cost be after attending school for four years?
Answer:
256,800 I believe
Step-by-step explanation:
you add up all the numbers and multiply by 4