H(t)=-16t^2+1221 is the function for the height as a function of time. It will hit the ground when h=0 so:
-16t^2+1221=0
16t^2-1221=0
16t^2=1221
t^2=1221/16
t=√(1221/16) seconds
t≈8.74 seconds (to nearest hundredth of a second)
Answer:
6
Step-by-step explanation:
Negative six plus twelve is positive six
Answer:
If you know your doubles, then it should be easy to go from 4 + 4 = 8 to 4 + 5 = 9.
Step-by-step explanation:
Answer:
usub from where
Step-by-step explanation:
