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KonstantinChe [14]
3 years ago
7

Are the fractions 25 over 15 and 175 over 75 equivalent?

Mathematics
1 answer:
exis [7]3 years ago
3 0
No, they are not because
25/15 = 1.6666666667
175/75 = 2.333333333
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An air conditioning technician charged Robert $77.25 to repair his air conditioning system after 3 hours of work. The technician
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A ball is thrown downward from a cliff. Its position at time t seconds is given by the formula s(t) = 16t2 + 32t, where s is in
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It takes 2.8 seconds for the ball to fall 215 ft.

Step-by-step explanation:

We are given a position function s(t) where s stands for the number of feet the ball has fallen, so we have to replace s with the given value of 215 ft and solve for the time t.

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s(t) =16t^2+32t

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215=16t^2+32t

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16t^2+32t-215=0

At this point we can solve for t using quadratic formula.

t = \cfrac{-b\pm \sqrt{b^2-4ac}}{2a}

where a, b and c are the coefficients of the quadratic equation

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So we get

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Using a calculator we get

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