Posted by **Anonymous** on Saturday, February 5, 2011 at 3:29pm.

Solve the equation w=Cr^-2 for r.

This is what I got so far....

w/C=r^-2

Then I think it's...

ok so I don't really know. I want to put w/C=1/r^2 but the r is still not alone and I'm not sure where I'd take it from there. Please help.

- Algebra -
**helper**, Saturday, February 5, 2011 at 3:33pm
W = Cr^-2

W = C * 1/r^2

Multiply both sides by r^2

r^2 W = C

r^2 = C/W

- Algebra -
**Anonymous**, Saturday, February 5, 2011 at 3:43pm
I think your right. I got the same thing but for some reason I thought that the r is still not alone. Are you sure i don't go one step further and say that

r=sqrt(c/w)

what do you think?

- Algebra -
**helper**, Saturday, February 5, 2011 at 3:59pm
Sorry, I forgot the last step.

r = +- (sqrt(C/W))

- Algebra -
**Anonymous**, Saturday, February 5, 2011 at 4:04pm
Thanks. one more question. Why did you do the +- thing?

## Answer This Question

## Related Questions

- Substitution Method-Plz help - Use the Substitution method to solve the system ...
- Algebra Multiple Choice - Hello, This is the last of questions I have for my ...
- Intermediate Algebra (math) - m = 2rg^2 – 5rx solve for x I worked this problem...
- TO DRWLS/MATH HELP PLEASE - How do i solve inequalitites with three variables. I...
- Algebra 1 or 2 - 5x/4 + 1/2 = x - 1/2 solve the equation and check your ...
- confused calc - dy/dx=2y^2 and if y=-1 when x=1, then when x=2, y=? (you already...
- Algebra - To solve the system of equations, which expression could be ...
- Advanced Algebra - Solve the equation 4e^x -2=14 I got it this far... 4e^x=16 ...
- Pre-calc - Find the effective rate of interest for 5.25% compounded quarterly. I...
- introductory algebra - I had these problems on my test and for some reason got ...

More Related Questions