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10 February, 01:59

You throw a ball up in the air. the basketball's height, in feet, is given by the function:h=-16t^2+30t+4, where t is the time in seconds after the ball leaves your hand. Find the greatest height the ball reaches (use a calculator).

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  1. 10 February, 02:18
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    18.0625 ft

    Step-by-step explanation:

    Greatest height is when:

    t = - b/2a

    t = - 30/2 (-16)

    t = 15/16

    Greatest height is:

    -16t (15/16) ² + 30 (15/16) + 4 = 289/16

    = 18.0625m
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