(4 + 5) and (7/8 + 2/8) = 9 9/8 = 10 1/8.
Anything to the power of 0 is 1
So for the top, 2^0 = 1
For the bottom, 10^0 = 1
It is not 0, because anything that ends with 0/0 is <em>undetermined</em>, and will not result in an answer
hope this helps
Ratios are proportional if they represent the same relationship. One way to see if two ratios are proportional is to write them as fractions and then reduce them. If the reduced fractions are the same, your ratios are proportional.
