Algebra 2! Please help ASAP

Mathematics

1 answer:

sweet [91]3 years ago

6 0

the first box = Rational

the answers are the second 2 boxes

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The minute hand of a clock is 9 inches long. how far does the tip of the minute hand move in 40 minutes

GarryVolchara [31]

$\text{The minute hand of a clock is 9 inches long.}\\
\text{we need to find the distance traveled by the tip of the minute }\\
\text{hand moved in 40 minutes.}$

$\text{That is we need to find the length of the arc formed by the minute}\\
\text{hand in 40 minutes. We know that in one complete revolution of the}\\
\text{minute hand there are 60 minutes. so the central angle formed by the }\\
\text{minute hand in 40 minutes is}=\frac{40}{60}*2\pi =\frac{4\pi}{3} \text{ radians}\\
\\
\text{hence using the arc length formula, }s=r\theta, \text{ we get}\\
\\
\text{distance traveled by the tip}=9\times \frac{4\pi}{3}=12\pi\approx 37.7 \text{ inches}$

Hence the tip of the minute hand moved approximately 37.7 inches in 40 minutes.

5 0

3 years ago

I don't get this can somebody help me

Yuliya22 [10]

This is really easy if you think and look at the picture.

There were 15 dvds. 1/5 were documentaries.

All you have to do is figure out what 1/5 of 15 is. Yes?

So to find out what 1/5 of 15 is, you divide 15 by 5, and that's your answer.

The answer is 3.

8 0

3 years ago

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A car travels 255 miles in 3 3/4 at a constant speed. How many miles is the car traveling per hour?

disa [49]

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eighty thousand one hundred and seventy

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