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The equation y = -16t^2 + 60t + 54 describes the height (in feet) of a ball thrown upward at 60 feet per second from a height of 54 feet from the ground, where represents time, measured in seconds. In how many seconds will the ball hit the ground? Express your answer as a decimal rounded to the nearest hundredth.

 Jul 2, 2021
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When the ball hits the ground, the height, y = 0

 

-16t^2+60t+54 = 0        use quadratic formula or factoring to solve for 't' .....   throw out the negative value....

 Jul 2, 2021

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