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2 years ago

The figure below shows two half-circles at the ends of a rectangle with the dimension shown.

Mathematics

1 answer:

timurjin [86]2 years ago

5 0

Answer:

D. 154

Step-by-step explanation:

The area of the rectangle is 15*5= 75 inches

The area of the 2 semicircles combined, which make a circle, are:

π*r², where r is 5

r²=25

π*25=78.53981633

75 + 78.53981633 is about 154

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3 years ago

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AlekseyPX

Answer:

His 95% confidence interval is (0.065, 0.155).

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.

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In which

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For this problem, we have that:

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95% confidence level

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The upper limit of this interval is:

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3 years ago

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Answer:

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So, it will take 1.25 seconds to reach the ground.

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