An object is thrown upward at a speed of 58 feet per second by a machine from a height of 17 feet off the ground. The height hh of the object after tt seconds can be found using the equation h=−16t2+58t+17.   When will the height be 30 feet?Select an answer seconds per foot feet per second seconds feet  When will the object reach the ground? Select an answer feet seconds per foot seconds feet per second

Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter1: Introduction To Algebra
Section1.6: Translating Problems Into Equations
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An object is thrown upward at a speed of 58 feet per second by a machine from a height of 17 feet off the ground. The height hh of the object after tt seconds can be found using the equation h=−16t2+58t+17.
 
When will the height be 30 feet?
Select an answer seconds per foot feet per second seconds feet 



When will the object reach the ground?
Select an answer feet seconds per foot seconds feet per second 
 
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