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26 February, 23:50

The height in meters of a rocket launched from the ground after t seconds is modeled by h (t) = - 9.8r^2+49t. Graph a graph representing the interval of time when the rocket will be higher than 40 meters

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  1. 27 February, 03:46
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    9.8t^2-49t+40=0

    t = (49±√833) / 19.6

    t≈1.027, 3.97

    1.027
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