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3 years ago

5

This pie chart shows the number of books a bookstore sold in four months.What percentage of all the books that were sold in thes

e 4 months,were sold in April?

1 answer:

Diano4ka-milaya [45]3 years ago

5 0

Answer:

I would say C.

Step-by-step explanation:

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Rom4ik [11]

Answer:

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Step-by-step explanation:

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4 years ago

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NikAS [45]

Answer:

Step-by-step explanation:

lets say in the shown triangle x=165

so speed $\frac{dx}{dt} =25$

and $\frac{dy}{dt} =35$

Also since distance = speed* time

time = pi minutes = pi/60 seconds

y = $\frac{35\pi \pi }{60}$

y = $\frac{7\pi }{12}$

Now using the pythagorean :

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<u>derivate the equation so we get :</u>

$x\frac{dx}{dt} +y\frac{dy}{dt} =z\frac{dz}{dt} \\$ $165*25+35*\frac{7\pi }{12}=\sqrt{165^2+(\frac{7\pi }{12})^2} *\frac{dz}{dt}$

$\frac{dz}{dt} =25.387$ m/s

So Rate of change = <u><em>25.387 m/s</em></u>

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