Mathematics, 18.03.2021 02:10 shilohtito

HELP a football is kicked into the air and lands back on the ground 4 seconds later, it's height above the ground is approximated by the quadratic relation h=20t - 5t^2, where h is the height in metres, and t is the time in seconds.

when does the football reach its maximum height and what is the maximum height of the football?

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HELP a football is kicked into the air and lands back on the ground 4 seconds later, it's height ab...

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