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16 March, 09:39

If a rock falls from a height of 43 meters on Earth, the height H (in meters) after x seconds is approximately Upper H (x) equals 43 minus 4.9 x squared. (a) What is the height of the rock when xequals1.6 seconds? The height of the rock when xequals1.6 seconds is nothing meters.

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  1. 16 March, 11:14
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    2.96 seconds

    Step-by-step explanation:

    Let H (x) = zero and solve for "x".

    43 - 4.9x² = 0

    4.9x²=43

    x²=8.77

    x=2.96

    therefore, approximately when x=2.96seconds, the rock strike the ground.
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