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The height (in meters) of a shot cannonball follows a trajectory given by$h(t) = -4.9t^2 + 14t - 0.4 at time (in seconds). As an improper fraction, for how long is the cannonball above a height of 8.7 meters?

 Jan 4, 2022
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https://web2.0calc.com/questions/quadratic_10781

 Jan 4, 2022

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