Question 103926
If q is inversely proportional to the sum of x and y, then we have this relationship



{{{q=k/(x+y)}}} note: remember the inverse of an expression like {{{x+y}}} is {{{1/(x+y)}}}



Now plug in the given values to find k


{{{1.4=k/(0.5+0.7)}}} Plug in x=0.5, y=0.7, and q=1.4



{{{1.4=k/(1.2)}}} Add



{{{1.68=k}}} Multiply both sides by 1.2 to isolate k



So our answer is {{{k=1.68}}}