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A ball is thrown from a height of 164 feet with an initial downward velocity of 12 fus. The ball's height h (in feet) after 1 seconds is given by the following.
h=164-12r-16r²
How long after the ball is thrown does it hit the ground?
Round your answer(s) to the nearest hundredth.
(If there is more than one answer, use the "or" button.)
ground
seconds
D-D
X
5