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April 20, 2014

Homework Help: Math

Posted by Rutba on Sunday, October 28, 2012 at 2:05pm.

a firecracker is fired from the ground. The height of the firecracker at a given time is modeled by the function h(t) =-5t^2+50t, where h(t) is the height in metres and t is the time in seconds. When will the firecracker reach a height of 45m ?

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