Mathematics, 12.02.2021 19:50 mat1413
The height H of an ball that is thrown straight upward from an initial position 3 feet off the ground with initial velocity of 90 ft./s is given by the equation H equals 3+90 T -16 T squared where t equals time in seconds. After how many seconds will the ball be 84 feet above the ground
Answers: 3
of an ball that is thrown straight upward from an initial position 3 feet off the ground with initial velocity of 90 feet per second is given by equation 
, where 
is time in seconds. After how many seconds will the ball be 84 feet above the ground. 
(1)
, 
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