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02-02-2021
Mathematics

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How much time does it take for the quarter to hit the water ???

Please answer fast ASAP I give brainliest How much time does it take for the quarter to hit the water class=

Respuesta :

02-02-2021

Answer:

7 seconds

Step-by-step explanation:

y=-16t²+96t+112, where t is time and y is distance above water.

We are looking for t when y=0

-16t²+96t+112=0

t²-6t-7=0

(t-7)(t+1)=0

Either t=7 or t=-1.

Since we cant have negative time, the answer is t=7

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