All categories

3 years ago

I need help completing the missing value

Mathematics

2 answers:

Arlecino [84]3 years ago

7 0

Answer:

the missing value is -8, the ordered pair should look like this: (8,-8)

Step-by-step explanation:

1st you must acknowledge that 8 is the y-value in the ordered pair so once you know that you can plug in the y-value into the equation

2nd once you rewrite the equation it should look like this, -4x-8=24

3rd solve for x,

-4x-8=24

+8 +8 -add 8 on both sides

-4x=32

÷-4 ÷-4 -divide by -4 on both sides

x=-8

elixir [45]3 years ago

5 0

Answer:

x= -8

Step-by-step explanation:

Since you know y=8 you plug it into the equation

-4x -8=24

you then add 8 to each side

-4x=32

then divide by -4

x=-8

You might be interested in

Pls help me, im jsut asking all of my questions on brainy bc im super busy-

emmasim [6.3K]

Answer:

Step-by-step explanation:

So I think I got it

Soo first one is correct, second one is wrong thirds one is also wrong and fourth one is correct hope it’s correct!

8 0

3 years ago

Read 2 more answers

How large a sample should be selected to provide a 95% confidence interval with a margin of error of 6? Assume that the populati

marshall27 [118]

Using the z-distribution, it is found that a sample of 171 should be selected.

<h3>What is a z-distribution confidence interval?</h3>

The confidence interval is:

$\overline{x} \pm z\frac{\sigma}{\sqrt{n}}$

The margin of error is:

$M = z\frac{\sigma}{\sqrt{n}}$

In which:

$\overline{x}$ is the sample mean.

z is the critical value.

n is the sample size.

$\sigma$ is the standard deviation for the population.

For this problem, the parameters are:

$z = 1.96, \sigma = 40, M = 6$

Hence we solve for n to find the needed sample size.

$M = z\frac{\sigma}{\sqrt{n}}$

$6 = 1.96\frac{40}{\sqrt{n}}$

$6\sqrt{n} = 40 \times 1.96$

$\sqrt{n} = \frac{40 \times 1.96}{6}$

$(\sqrt{n})^2 = \left(\frac{40 \times 1.96}{6}\right)^2$

n = 170.7.

Rounding up, a sample of 171 should be selected.

More can be learned about the z-distribution at brainly.com/question/25890103

#SPJ1

4 0

2 years ago

Pls someone number 8

raketka [301]

Answer:

3 7/8 liters of rice

Step-by-step explanation:

$1 \frac{5}{8} + 2 \frac{1}{4}$

$1 \frac{5}{8} + 2 \frac{2}{8} = 3 \frac{7}{8}$

8 0

3 years ago

Pls HELP, WILL GAVE A 5 STAR RATING AND BRAINLIEST

bonufazy [111]

Answer:

Step-by-step explanation:

-7x-3=2-7x-5

cancel equal terms

-3=2-5

calculate the difference

-3= -3

This statement is true.

6 0

3 years ago

The scores on an exam are listed. If a teacher wants to explain how poorly the class did on the test, would she use the mean, me

icang [17]

It is the mean. 57.857

4 0

3 years ago