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Mathematics 18 Online
OpenStudy (anonymous):

A baseball is thrown up into the air. The ball's height in feet is modeled by the equation h(t) = -16t2 + 32t + 10. (h = height, t = time in seconds) Find the maximum height of the ball.

OpenStudy (anonymous):

Use this article: http://en.wikipedia.org/wiki/Quadratic_equation

OpenStudy (anonymous):

Dh(t) = -32t +32 = 0 for max, t=1sec so h(t) is 26 feet

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