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matrenka [14]
3 years ago
9

Shelley ran 20 minutes and burned 130 calories. How many calories did Shelly burn per minute?

Mathematics
1 answer:
Savatey [412]3 years ago
3 0
ANSWER

6.5 calories per minute.

EXPLANATION

To find the calories Shelley burned per minute, divide the total calories burned by the total minutes ran.

Calories burned for a minute

= \frac{130}{20}

This will give us,

= \frac{13}{2}

= 6.5 \: calories
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Step-by-step explanation:

Since the piston starts at its maximal height and returns to its maximal height three times evert 2 seconds, it is modelled by a cosine functions, since a cosine function starts at its maximum point. So, its height h = Acos2πft

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Now, since the piston rises in such a way that it returns to the maximal height three times every two seconds, its frequency, f = number of oscillations/time taken for oscillation where number of oscillations = 3 and time taken for oscillations  = 2 s

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