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Mathematics, 13.08.2019 01:30 july00
Arock is thrown straight up into the air from a height of 4 feet, the height of the rock above the ground , in feet, t seconds after it is thrown is given by -16t^2 + 56t + 4. for how many seconds will the height of the rock be at least 28 feet above the ground?
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Arock is thrown straight up into the air from a height of 4 feet, the height of the rock above the g...
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