SOLUTION: The height h in feet of an object after t seconds is given by the function h = �16t2 + 30t + 8. How long will it take the object to hit the ground? Round your answer to the nea

Question 109346: The height h in feet of an object after t seconds is given by the function
h = �16t2 + 30t + 8. How long will it take the object to hit the ground? Round your answer to the nearest thousandth.

Thanks in advance
Answer by checkley71(8403) (Show Source): You can put this solution on YOUR website!
0=-16T^2+30T+8
0=-2(8T^2-15T-4)

T=(15+-SQRT[15^2-4*8*-4])/2*8
T=(15=-SQRT[225+128])/16
T=(15+-SQRT353)/16
T=(15+-18.79)/16
T=(15+18.79)/16
T=33.79/16
T=2.112 ANSWER.
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