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miskamm [114]
3 years ago
9

What's the work and answer for this problem with the Pythagorean theorem

Mathematics
2 answers:
Novay_Z [31]3 years ago
7 0

Answer:

b = 3

Step-by-step explanation:

a^2+b^2=c^2

12^2+b=15^2

15^2 - 12^2 = 3

b = 3^2

hope this helps :)

Rus_ich [418]3 years ago
7 0

Answer:

the answer is b=3

hope this helped bye

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Answer:

We need a sample size of 564.

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}}

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We need a sample size of n

n is found when M = 0.04

So

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

0.04 = 1.96\sqrt{\frac{0.6231*0.3769}{n}}

0.04\sqrt{n} = 1.96\sqrt{0.6231*0.3769}

\sqrt{n} = \frac{1.96\sqrt{0.6231*0.3769}}{0.04}

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Rounding up

We need a sample size of 564.

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