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3 years ago

Of the factors of 12 shown, which also have a sum of 7?

Mathematics

1 answer:

barxatty [35]3 years ago

4 0

The answer is C because 3 and 4 add together to equal 7

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Circle any 2 factors of 400

Alexxandr [17]

A factor is a group of 2 or more numbers that can be multiplied to make a greater number.

The factors for 400 include:

1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200

When paired together:

(1, 400), (2, 200), (4, 100), (5, 80), (8, 50), (10,40), (16, 25), (20,20)

Prime factors:

1, 2, 5

6 0

3 years ago

Read 2 more answers

2x^3y + 18xy - 10x^2y - 90y Part A: Rewrite the expression so that the GCF is factored completely. (3 points)

Verizon [17]

2y(x3+9x-10x2-45) not much to be taken as a common factor

4 0

3 years ago

Find the slope of the line that passes through (10, 3) and (1, 10).

tatyana61 [14]

Answer: -7/9

Step-by-step explanation:

1-10

5 0

2 years ago

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You are curious about the average number of yards Matthew Stafford throws for each game for the Detroit Lions. You randomly sele

Damm [24]

Answer:

The margin of error for this estimate is of 14.79 yards per game.

Step-by-step explanation:

We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.

T interval

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 20 - 1 = 19

95% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 19 degrees of freedom(y-axis) and a confidence level of $1 - \frac{1 - 0.95}{2} = 0.975$ . So we have T = 2.093

The margin of error is:

$M = T\frac{s}{\sqrt{n}}$

In which s is the standard deviation of the sample and n is the size of the sample.

You randomly select 20 games and see that the average yards per game is 273.7 with a standard deviation of 31.64 yards.

This means that $n = 20, s = 31.61$

What is the margin of error for this estimate?

$M = T\frac{s}{\sqrt{n}}$

$M = 2.093\frac{31.61}{\sqrt{20}}$

$M = 14.79$

The margin of error for this estimate is of 14.79 yards per game.

3 0

3 years ago

If b/a=c/b=d/c=2/3, find the value of a:b:c:d

leva [86]

Answer:

the ratio would be 6.75:4.5:3:2

Step-by-step explanation:

replace d and c with

d=2 and c=3

Then using proportion multiplication, you will find that b is 4.5

now replace all b with 4.5.

Then again using proportion multiplication, you will get a is 6.75.

Plug in a, b, c, d in the ratio and you get 6.75:4.5:3:2

5 0

2 years ago