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Aball is thrown from a height of 139 feet with an initial downward velocity of 15 ft/s. the ball's height h (in feet) after t seconds is given by the following. h=139-15t-16t^2 how long after the ball is thrown does it hit the ground? round your answer(s) to the nearest hundredth. (if there is more than one answer, use the "or" button.) t =
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Given the equation  = 5, solve for x and identify if it is an extraneous solution
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What ordered pair represents this equation? 3x-y=8 and x+y=2
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Find all of the subsets of C. C = {a, b, e, f}...
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