I need help because I don't understand how to solve this equation.

Question

37. x/a - 1 = y/b for x

So... does it mean solve for x?

39. V = 1/3 * pi * radius^2 * h for h

So... does it mean solve for h?

As you can see, I am really confused.

Please help.

Answer 1

example:

V=1/3 PI r^2 H
solve for h.

divide both sides by 1/3 pI r^2

h=V/(1/3 PI r^2)=3V/PIr^2

Answer 2

I'm sorry. I don't really get what you are doing. Can you explain?

Answer 3

The questions are asking you to rearrange the equations for a given variable.

remember, what you do to one side, you have to do to the other.

so

x/a - 1 = y/b for x

add 1 to each side

x/a = y/b + 1

now multiply by a

x= ay/b + a