Mathematics, 22.11.2019 18:31 hwilson118027

Aball is thrown from an initial height of 7 feet with an initial upward velocity of 30ft/s . the ball's height h (in feet) after t seconds is given by the following. h=7+30t-16t^2
find all values of t for which the ball's height is 20 feet.
round your answer(s) to the nearest hundredth.

t = —— seconds

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