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Mathematics, 27.09.2019 19:20 jendun123ovrxij

Aball is thrown in the air from a ledge. it’s height in feet represented by f(x)=16(x^2-6x-7), where x is the number of seconds since the ball has been thrown. the height of the ball is 0 feet when it hits the ground. how many seconds does it take the ball to reach the ground?

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