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How do I work out this math equation?

Asked by kittykat219 (136points) December 4th, 2011

Hello :)

A ball is thrown upward from the ground level. Its height h, in feet, above the ground after t seconds is h=48t-16t^2. Find the maximum height of the ball.

I already know that the answer is 36 (max height). But I’m not sure how to get there.. can you help explain it to me? Thank you!

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