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anonymous
 one year ago
a ball is thrown from an initial height of 5 feet with an initial upward velocity of 21ft/s . The ball's height h (in feet) after seconds t is given by the following.
h=5+21t16t^2
Find all values of t for which the ball's height is 11 feet.
Round your answer(s) to the nearest hundredth.
(If there is more than one answer, use the "or" button.)
anonymous
 one year ago
a ball is thrown from an initial height of 5 feet with an initial upward velocity of 21ft/s . The ball's height h (in feet) after seconds t is given by the following. h=5+21t16t^2 Find all values of t for which the ball's height is 11 feet. Round your answer(s) to the nearest hundredth. (If there is more than one answer, use the "or" button.)

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