Answer: 4 seconds
Step-by-step explanation:
Given: The function
can be used to model the height of the ball where t is the time in seconds after the ball kicked and h(t) is the height in feet.
Differentiate the given function with respect to t , we get

Put h'(t)=0

Also, 
By second derivative test, h(t) is maximum at t=4.
Hence, the time in Devon which the ball reaches it maximum height = 4 seconds
Answer:
its A my guy did it on apex 972.41
Step-by-step explanation:
I hope this helps you
-4/3x+y=15
-12x-4y= -60
12x+4y=60
0=0
no solution
You find the smallest denominator
Answer:
This is the quadratic formula, what do you need help with?
Step-by-step explanation:
Brainliest?