emdorsheimer
New member
- Joined
- Oct 6, 2006
- Messages
- 17
The height h in feet of an object after t seconds is given by the function:
h = –16t2 + 60t + 9
How long will it take the object to hit the ground? Round your answer to the nearest thousandth.
When it hits the ground h will be:
0 - 16t^2 + 60t + 9= 0
t = [-60+/-sqrt(3600 + 576)] - 32t = -60 + 64.62 - 32t = -27.38
Again it doesn't match any given answer. Where did I go wrong again?
______________________________
Edited by stapel -- Reason for edit: formatting
h = –16t2 + 60t + 9
How long will it take the object to hit the ground? Round your answer to the nearest thousandth.
When it hits the ground h will be:
0 - 16t^2 + 60t + 9= 0
t = [-60+/-sqrt(3600 + 576)] - 32t = -60 + 64.62 - 32t = -27.38
Again it doesn't match any given answer. Where did I go wrong again?
______________________________
Edited by stapel -- Reason for edit: formatting