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3 years ago

What is the number that when you multiply by six and subtract four to the product you get 32

Mathematics

2 answers:

ollegr [7]3 years ago

8 0

Answer:

Step-by-step explanation:

Furkat [3]3 years ago

3 0

Answer:

Step-by-step explanation:

32 + 4 = 36

36 / 6 = 6

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

lara31 [8.8K]

Answer:

The sample size is 1875.

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:

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

Sampling error of 0.03.

This means that $M = 0.03$

99.74% confidence level

So $\alpha = 0.0026$ , z is the value of Z that has a pvalue of $1 - \frac{0.0026}{2} = 0.9987$ , so $Z = 3$ .

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

This means that $\pi = 0.25$

What is the sample size

The sample size is n. So

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

$0.03 = 3\sqrt{\frac{0.25*0.75}{n}}$

$0.03\sqrt{n} = 3\sqrt{0.25*0.75}$

Simplifying by 0.03 both sides

$\sqrt{n} = 100\sqrt{0.25*0.75}$

$(\sqrt{n})^2 = (100\sqrt{0.25*0.75})^2$

$n = 1875$

The sample size is 1875.

7 0

3 years ago

WILL GIVE BRAINLEST HELP ASAP PLEASE<br> find the volume of the solid in the picture below pls:)

gogolik [260]

Answer: 50 maybe

Step-by-step explanation: Add everything around it and than inside the shape

5 0

3 years ago

What's the area of these?

kvasek [131]

Left side: 63, 72, 16 right side: 36, 4, 35

6 0

4 years ago

What’s the correct answer for this?

Gnesinka [82]

Answer: false

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

The coordinates of the vertices of a polygon are (−2,1), (−3,3), (−1,5), (2,4), and (2,1).

tino4ka555 [31]

15.9 units is the answer plus just for the future you should try plotting them down and adding that to the question.

5 0

3 years ago