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weqwewe [10]
2 years ago
5

In a​ poll, 69​% of the people polled answered yes to the question​ "Are you in favor of the death penalty for a person convicte

d of​ murder?" The margin of error in the poll was 2​%, and the estimate was made with 94​% confidence. At least how many people were​ surveyed?
Mathematics
1 answer:
alekssr [168]2 years ago
8 0

Answer:

At least 2 people were surveyed

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Answer:  \displaystyle y= \frac{2\text{x}}{4\text{x} - 1}

============================================

Work Shown:

8\text{x}y= 2(2\text{x} + y)\\\\8\text{x}y= 4\text{x} + 2y\\\\8\text{x}y - 2y= 4\text{x}\\\\y(8\text{x} - 2)= 4\text{x}\\\\y= \frac{4\text{x}}{8\text{x} - 2}\\\\y= \frac{2*2\text{x}}{2(4\text{x} - 1)}\\\\y= \frac{2\text{x}}{4\text{x} - 1}\\\\

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Explanation:

The idea is to first get all the y terms to one side. I did this by subtracting 2y from both sides in the third step.

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Afterward there's the optional steps of simplifying (as shown in the final two steps).

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2 years ago
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Answer:  Option 'd' is correct.

Step-by-step explanation:

Since we have given that

Number of hours of pop music = 3

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Rate of increment = 5% = 0.05

Let the number of months be 'x'.

So, our required function becomes,

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Hence, Option 'd' is correct.

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2 years ago
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