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16 July, 23:58

The height of a ball in meters is modeled by f (x) equals negative 5X squared + 50 X where X is the time in seconds after it is hit how long is the ball in the air

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  1. 17 July, 00:06
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    10 seconds

    Step-by-step explanation:

    Find the zeros by equating f (x) to zero, that is

    - 5x² + 50x = 0 ← factor out - 5x from each term

    - 5x (x - 10) = 0

    Equate each factor to zero and solve for x

    - 5x = 0 ⇒ x = 0

    x - 10 = 0 ⇒ x = 10

    x = 0 denotes the time when the ball is struck and x = 10 when the ball returns to the ground.

    Time in air = 10 - 0 = 10 seconds
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