Answer:
3(a-1)
Step-by-step explanation:
3a-3
3*a -3*1
There is a 3 in both terms so we can factor it out
3(a-1)
Answer:

Step-by-step explanation:
we know that
The volume of a right circular cone is equal to

where
r is the radius of the base of the cone
h is the height
Solve for r-----> That means, isolate the variable r
so
step 1
Multiply by 3 both sides

step 2
Divide by
both sides

step 3
take square root boot sides

Answer:

Step-by-step explanation:
The plane is descending, so the change in height is a negative change.
rate of descent = (change in height)/time
rate of descent = (new height - old height)/time
rate of descent = (7400 ft - 15000 ft)/(3 min)
rate of descent = (-7600 ft)/(3 min)
Answer: 