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OpenStudy (anonymous):
A ball is thrown into the air with an upward velocity of 36ft/s. Its height h in feet after seconds is given by the function h=-16t^2 +36t +9
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OpenStudy (anonymous):
is the problem to find the maximum height? or to find when it hits the ground? max is at \(h=-\frac{b}{2a}\) like the last one
OpenStudy (anonymous):
you neglected to write the question, but because your last question involved the vertex i assumed that this one probably does as well
OpenStudy (anonymous):
ok
OpenStudy (anonymous):
sorry: A. In how many seconds does the ball reach its maxium height? B. What is the maximum height?
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