3 years ago

Need it answered ASAP answer choices is A. 1.72 B. -.22 C. .75 D. 3

Mathematics

1 answer:

Ivanshal [37]3 years ago

5 0

The answer to this is .75 seconds.

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Vlad1618 [11]

Answer:

Reaches a maximum height of 235.00 feet in 3.75 seconds.

Step-by-step explanation:

The height of the boulder, h, in feet after t seconds is given by the function is given by :

$h=-16t^2+120t+10$ .....(1)

For maximum height, put $\dfrac{dh}{dt}=0$

i.e.

$\dfrac{d(-16t^2+120t+10)}{dt}=0\\\\-32t+120=0\\\\32t=120\\\\t=3.75\ s$

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