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4 March, 20:28

H = - 16t2 + 64t + 80 Determine the maximum height of the rocket. Show your work.

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  1. 4 March, 23:49
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    H = - 16t² + 64t + 80 (:16)

    H = - t² + 4t + 5

    / / = b²-4ac

    / / = 4²-4. (-1).5

    / / = 16+20

    / / = 36

    Yv = - / / / 4a

    Yv = - 36/4. (-1)

    Yv = - 36/-4

    Yv = 9
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