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Maru [420]
2 years ago
14

Plsss helppp 100 points extra and brainleist NO LINKS

Mathematics
1 answer:
Mila [183]2 years ago
6 0

Answer:

Not sure if this is right but 2.

Step-by-step explanation:

Subtract 37,746ft (at 60 second mark) by 9,872ft (at 30 second mark) and as it asks for per second, 37,746-9,874=27,872 27,872/30= 929.1

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A researcher is interested in estimating the average salary of police officers in a large city. She wants to be 95% sure that he
inn [45]

Answer:

The sample size is 183.

Step-by-step explanation:

Given:

σ = $1050, ppulatin standard deviation

99% confidence interval

Accuracy = +/- $200

The accuracy is given by

z*(σ/√n)

where

z* = 2.576 for 99% confidence level (from tables)

n = sample size

Therefore

2.576(1050/√n) = 200

√n = (2.576*1050)/200 = 13.524

n = 182.9

<em>The sample size is 183</em>

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3 years ago
Simplify the trigonometric expression sin(4x)+2 sin(2x) using Double-Angle
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AURORKA [14]
Each person will get 4.75 ounces of cake. You just divide 33 1/4 by 7. 
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