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2 years ago

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50) A wheel has a radius of 9 inches and travels as it spins. How far does the wheel travel in one revolution? Show your work. U

se 3.14 for /pi and round to the nearest inch please :).

1 answer:

Ipatiy [6.2K]2 years ago

5 0

You must use the formula for the circumference of a circle which is 19*3.14. That is the distance the wheel travels in one revolution.

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$\bar X = \frac{62+63+68+72+79+80+83+93+94+95}{10}= 78.9$

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Step-by-step explanation:

We have the following data given:

62 63 68 72 79 80 83 93 94 95

And we need to begin finding the mean with the following formula:

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And replacing we got:

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$|63-78.9| = 15.9$

$|68-78.9| = 10.9$

$|72-78.9| = 6.9$

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$|80-78.9| = 1.1$

$|83-78.9| = 4.1$

$|93-78.9| = 14.1$

$|94-78.9| = 15.1$

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And finally we can find the mean abslute deviation with the following formula:

$MAD = \frac{\sum_{i=1}^n |X_i -\bar X|}{n}$

And replacing we got:

$MAD =\frac{16.9+15.9+10.9+6.9+0.1+1.1+4.1+14.1+15.1+16.1}{10}= 10.12$

And the best anwer is

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