3 years ago

Help me noww i neex helppppp

1 answer:

3 0

X = 135 degrees

Angles on a straight line measures 180 degrees

Therefore subtract 45 degrees from 180 degrees and the total is x.

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Our margin of error is 4%, or 0.04. We use the formula

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Subtract from 1: 1-0.98 = 0.02
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Subtract from 1: 1-0.01 = 0.99

Using a z-table (http://www.z-table.com) we see that this value has a z-score of approximately 2.33. Using this, our margin of error and our proportion, we have:

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Divide both sides by 2.33:
$\frac{0.04}{2.33}=\sqrt{\frac{0.08(0.92)}{n}}$

Square both sides:
$(\frac{0.04}{2.33})^2=\frac{0.08(0.92)}{n}$

Multiply both sides by n:
$(\frac{0.04}{2.33})^2n=0.08(0.92)$

Divide both sides to isolate n:
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\\
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