480t - 16t

^{2}= 3200divide by -16

and rearrange terms

t

^{2}-30t + 200 =0(t-10)(t-20)=0

t=10 and t=20

Shreya S.

asked • 04/09/18 Find:

the times when it is 3200 feet above the ground

the times when it is 3200 feet above the ground

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480t - 16t^{2} = 3200

divide by -16

and rearrange terms

t^{2} -30t + 200 =0

(t-10)(t-20)=0

t=10 and t=20

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