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2 years ago

Pls help I’ll brainlest ASAP

Mathematics

1 answer:

pochemuha2 years ago

5 0

Answer:

Step-by-step explanation:

112-4x = 144

-4x = 32

x = -8 incorrect answers

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Factor the following Polynomial a) 6x - 18

musickatia [10]

U could easily do this on Photo-math- but here: 6(x−3)

7 0

2 years ago

Read 2 more answers

I need help plz!!!!!!

GrogVix [38]

Answer:

put -2 in -2 / put -2 again in same spot and again just do it for 3 times then 1/3 in the middle of 0 and -2 but a bit closer to the -2

Step-by-step explanation:

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3 years ago

6.Suppose the Gallup Organization wants to estimate the population proportion of those who think there should be a law that woul

drek231 [11]

Answer:

A sample of $n = (\frac{1.96\sqrt{0.3696*0.6304}}{E})^2$ is needed, in which E is the desired margin of error, as a proportion. If we find a decimal value, we round up to the next whole number.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

The margin of error is of:

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

In a previous study of 1012 randomly chosen respondents, 374 said that there should be such a law.

This means that $n = 1012, \pi = \frac{374}{1012} = 0.3696$

95% confidence level

So $\alpha = 0.05$ , z is the value of Z that has a pvalue of $1 - \frac{0.05}{2} = 0.975$ , so $Z = 1.96$ .

How large a sample size is needed to be 95% confident with a margin of error of E?

A sample size of n is needed, and n is found when M = E.

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

$E = 1.96\sqrt{\frac{0.3696*0.6304}{n}}$

$E\sqrt{n} = 1.96\sqrt{0.3696*0.6304}$

$\sqrt{n} = \frac{1.96\sqrt{0.3696*0.6304}}{E}$

$(\sqrt{n})^2 = (\frac{1.96\sqrt{0.3696*0.6304}}{E})^2$

$n = (\frac{1.96\sqrt{0.3696*0.6304}}{E})^2$

A sample of $n = (\frac{1.96\sqrt{0.3696*0.6304}}{E})^2$ is needed, in which E is the desired margin of error, as a proportion. If we find a decimal value, we round up to the next whole number.

4 0

3 years ago

In AGHI, the measure of ZI=90°, the measure of ZG=5°, and IG = 57 feet. Find the

xxTIMURxx [149]

Answer:

The answer is 57.2

This is correct

3 0

2 years ago

PLEASE ANSWERRRRRRRRR<br><br> Solve the system of equations.

goldfiish [28.3K]

Answer:

x=6 y=-3 (6,-3)

Step-by-step explanation

6 0

2 years ago