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OpenStudy (anonymous):
A rock is thrown from the top of a tall buliding. The distance, in feet, between the rock and the ground t seconds after it is thrown is given by d= -16t^2 - 4t + 412. How long after the rock is thrown is it 410 ft from the ground?
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OpenStudy (anonymous):
I think you use the quadratic equation, but I am unsure of what to do with the 412
OpenStudy (anonymous):
quadratic formula, I mean
OpenStudy (anonymous):
|dw:1337911023552:dw|
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