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The height of a ball when it is thrown off a cliff can be represented by the equation h=45-7t-6t^2, where t is time in seconds. In how many seconds will the ball reach a height of 25 feet?

 Mar 14, 2020
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h(t) = 25 ft

 

25 = 45-7t-6t^2

0 = 20 - 7t - 6t^2    Use quadratic formula to find t = 1.33 sec

 Mar 14, 2020

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