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29 June, 12:59

A ball is kicked straight up into the air. The height of the ball in feet is given by the expression - 16t2 + 12t + 4, where t is time in seconds. Factor the expression. Then find the height of the ball after 1 second.

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  1. 29 June, 14:16
    0
    0 feet.

    Step-by-step explanation:

    h = - 16t^2 + 12t + 4

    h = - 4 (4t^2 - 3t - 1)

    = - 4 (4t + 1) (t - 1)

    After 1 second height = - 4 * 1 * 0 = 0 feet.
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