2010 · Q19
If x varies as, the mth power of y, y varies as the nth power of z and x varies as the pth power of z, then which one of the following is correct?
Elementary MathematicsAlgebra
- AP=m+n
- BP=m-n
- CP=mn
- DNone of the above
Explanation
x ∝ (z^n)^m = z^(mn), so p = mn.