The ball's velocity will be represented by the derivative of its distance function:
Now find the times
for which this is equal to 30, i.e. solve
This has two solutions,
, but only one is positive and falls in the interval
![[0,3]](https://tex.z-dn.net/?f=%5B0%2C3%5D)
. So the velocity reaches 30 cm/s when
.
Answer:
i think bca would be the same
Step-by-step explanation:
The answer is B)
x2+2x−3=0
Factor left side of equation.
(x−1)(x+3)=0
Set factors equal to 0.
x−1=0 or x+3=0
x=1
or
x=−3
The answer you are looking for is 6.
To find this answer, you first add 1/6 and 5/6. Adding them together will give you 6/6 or 1. Next, you add all the whole numbers together. 3 + 2 + 1 = 6. Thus making 6 your answer.
I hope this helps!
The answer to this question is A. 3
