SOLUTION: A projectile is fired vertically upward and can be modeled by the function h(t)=−16t2+900t+175. During what time interval will the projectile be more than 9000 feet above the gro
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Question 1196770: A projectile is fired vertically upward and can be modeled by the function h(t)=−16t2+900t+175. During what time interval will the projectile be more than 9000 feet above the ground? Round your answer to the nearest hundredth.
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A projectile is fired vertically upward and can be modeled by the function h(t)=−16t2+900t+175.
During what time interval will the projectile be more than 9000 feet above the ground?
Round your answer to the nearest hundredth.
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Solve this equation
−16t2 + 900t + 175 = 9000,
or, equivalently
16t^2 - 900t + 8825 = 0.
Use the quadratic formula.
Your time interval is between the roots.
You are fully instructed to complete the job on your own.
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