Answer:
The instantaneous velocity after eight seconds is 9 m/s
Step-by-step explanation:
Given as :
The ball shot upward with velocity of 15 m/s
The height of the ball after t sec is given as h(t) =
Now, The instantaneous velocity after 8 sec = 
Or, The instantaneous velocity =
or, The instantaneous velocity = 
Now at t = 8 sec
The instantaneous velocity = 5 + 4 = 9 m/s
Hence The instantaneous velocity of ball at t = 8 sec , is 9 m/s Answer
Answer: (f + 2) (f + 8)
It's hard to explain, but I suggest you use the AC method. Hope this helps!
Answer:
5
Step-by-step explanation:

=
=
=5
Answer:
the answer is: 6z^3
Step-by-step explanation:
We need to solve this equation:

We know that 6X6 = 36
and √ = 1/2
Solving:

So, the answer is: 6z^3
x= 4.5
18x - 9 = 72 are the equations
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- Elisha