Answer:

Step-by-step explanation:
Let us start by isolating x for dx = x + 9.
dx - x = x + 9 - x > dx - x = 9.
Factor out the common term of x > x(d - 1) = 9.
Now divide both sides by d - 1 >
. Go ahead and simplify.
.
Now,
.
.
Group the like terms...
.
>
.
Now for
.
.
Now for
.
Thus we then get
.
Now we want to combine fractions.
.



.
Expand
.
.

Therefore
.
Hope this helps!
Answer:
A
Step-by-step explanation:
Answer:
hello your question is incomplete attached below is the complete question
answer : -2400 π
Step-by-step explanation:
dr/dt = -12 km/s
h = 2.5 km
r = 40 km at some instant
hence the rate of change of Volume of cylinder at that instance
= dv / dt =
=
= 
hence ; dv / dt = -2400 π
4/5/8/87/7/9 is the answer