20-10-2022
Mathematics

Answered

PLEASE HELP ASAP!

The function of h-5t^2 + 20t +2 gives the approximate height, h meters, of a thrown football as a function of the time, t seconds, since it was thrown. The ball hit the ground before a receiver could get near it.
For how many seconds was the height of the ball at least 17m?

Answer :

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