Solve each equation or formula for the specified variable. Please explain how you do it because I don't understand it.
1. A = 1/2πr^2 for π
2. x-y
----- = 3 for x
2z
3. 4m-n=1 for n
4. 9a = 12a + 3b fir b
__________
4

Question

Solve each equation or formula for the specified variable. Please explain how you do it because I don't understand it.
1. A = 1/2πr^2 for π
2. x-y
----- = 3 for x
2z
3. 4m-n=1 for n
4. 9a = 12a + 3b fir b
          __________
                4

hero · Answer

Says solve for the indicated variable, but \pi isn't considered a variable.

anonymous · Answer

That's what my homework says. I have an example on my notes which is C = 2pir2
pi = c/2r

anonymous · Answer

Literal equations.

hero · Answer

You should ask your teacher whether pi is considered a variable or a constant.

anonymous · Answer

I'm assuming variable because of the directions that say, "Solve each equation for the indicated variable."

hero · Answer

https://www.google.com/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#q=is%20pi%20considered%20a%20constant