algebra

If a stone is tossed from the top of a 310 meter building the height of the stone as a function of time is given by h(t)=-9.8t^2-10t+310 where t is in seconds and height is in meters. After how many seonds will the stone hit the ground? Round to the nearest hundreth's answer.

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  1. just solve h(t) = 0

    t = 5.14

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