Answer:
h = 
Step-by-step explanation:
Given
V = Bh ( isolate h by dividing both sides by B )
= h
A(b-c)=d solution is number 2. Attachment added
Answer:
the answerrrrrrrrrrr is 3(x+5)^2
To find the average, you have to add all the numbers up and then divide by the amount of numbers you added together.
Equation: (86+87+91+x)/4=98
Solve for x:
86+87+91+x=98*4
264+x=392
x=392-264
x=128
The fourth number is 128