ball is thrown upward with an initial velocity of 28 meters per second from a cliff that is 80 meters high. The height of the ball is given by the quadratic equation h = -4.9t 2 + 28t + 80 where h is in meters and t is the time in seconds since the ball was thrown. Find the time it takes the ball to hit the ground. Round your answer to the nearest tenth of a second

Elementary Algebra
17th Edition
ISBN:9780998625713
Author:Lynn Marecek, MaryAnne Anthony-Smith
Publisher:Lynn Marecek, MaryAnne Anthony-Smith
Chapter10: Quadratic Equations
Section10.5: Graphing Quadratic Equations
Problem 10.108TI: A toy rocket shot upward from the ground at a rate of 208 ft/sec has the quadratic equation of...
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A ball is thrown upward with an initial velocity of 28 meters per second from a cliff that is 80 meters high. The
height of the ball is given by the quadratic equation h = -4.9t
2 + 28t + 80 where h is in meters and t is the time in
seconds since the ball was thrown. Find the time it takes the ball to hit the ground. Round your answer to the
nearest tenth of a second. 

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