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Mathematics 14 Online
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?

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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