See Exercise 81. For what time period is the projectile at least 744 ft above the ground?
Question:
See Exercise 81. For what time period is the projectile at least 744 ft above the ground?
Exercise 81
A projectile is fired straight up from ground level. After t seconds, its height above the ground is s feet, where s = -16t2 + 220t. For what time period is the projectile at least 624 ft above the ground?
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16t 2 220t 744 Step 1 Find the values of t that satisfy Step 2 The two numbers ...View the full answer
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Related Book For 
College Algebra
ISBN: 978-0134697024
12th edition
Authors: Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
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