The height at time t is
h(t) = 144 - 16t²
When t = 0, then h = 144.
Therefore the height from the ground is 144 when the object is dropped.
When the object reaches the ground, h = 0.
Therefore
144 - 16t² = 0
t² = 144/16 = 9
t = 3 s
Answer:
The object reaches the ground in 3 seconds.
What you do, to convert a percention to a fraction is to divide the percent by 100. This will give you the fraction of that percent. Knowing this, you can eliminate all the other possible answers that have been listed.
Answer:
13
Step-by-step explanation:
We only need to pay attention to the x. We multiply 3 and 4 to get 12. Then we add 1 to get 13.
Answer:
r = 2.5
Step-by-step explanation:
the area of the whole circle = 
*π * 24
A = πr² = (13π*24)/50
r = √((13*24)/50) = 2.5 inches
