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2 years ago

Find the value of x. Please help I will mark brainliest!!!!

Mathematics

1 answer:

Alisiya [41]2 years ago

6 0

Answer:

x = 2

Step-by-step explanation:

The triangle is reflected across the circle meaning it should be the same on both sides.

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How do i do this????

yarga [219]

Blank 1=8

Blank 2=3

Blank 3=11

8 0

3 years ago

Read 2 more answers

A researcher wants to estimate the percentage of all adults that have used the Internet to seek pre-purchase information in the

Lubov Fominskaja [6]

Answer:

The required sample size for the new study is 801.

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:

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

25% of all adults had used the Internet for such a purpose

This means that $\pi = 0.25$

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 $Z = 1.96$ .

What is the required sample size for the new study?

This is n for which M = 0.03. So

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

$0.03 = 1.96\sqrt{\frac{0.25*0.75)}{n}}$

$0.03\sqrt{n} = 1.96\sqrt{0.25*0.75}$

$\sqrt{n} = \frac{1.96\sqrt{0.25*0.75}}{0.03}$

$(\sqrt{n})^2 = (\frac{1.96\sqrt{0.25*0.75}}{0.03})^2$

$n = 800.3$

Rounding up:

The required sample size for the new study is 801.

4 0

2 years ago

What is the lower quartile of the following set?

dalvyx [7]

I think your answer might be 19.5

3 0

2 years ago

Read 2 more answers

A cook makes vegetable barley soup by mixing 2 pounds of barley into 7 quarts of vegetable broth. Assume that the cook continues

grandymaker [24]

Answer:

10 lbs

Step-by-step explanation:

7 qts x 5 qts = 35 qts broth

2 lbs x 5 lbs = 10 lbs barley

8 0

3 years ago

How many times greater is 10 cubic yards than 5 cubic yard? Complete the equation

monitta

Answer:

2 times

Step-by-step explanation:

10 / 5 = 2

5 x 2 = 10

so 10 is 2 times greater than 5

8 0

3 years ago