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27 March, 18:06

A box is tossed upward from a cliff that is 12 meters high, at a speed of 11 meters per second. The height of the box in meters is given by h (t) = -4.9t2+11t+12 where t is seconds. What is the height of the box at 1 second?

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  1. 27 March, 19:27
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    18.1 meters

    Step-by-step explanation:

    h (t) = - 4.9t² + 11t + 12

    When t = 1:

    h (1) = - 4.9 (1) ² + 11 (1) + 12

    h (1) = - 4.9 + 11 + 12

    h (1) = 18.1

    The height of the box is 18.1 meters.
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