What is (-7)^3 / (-7)^4 simplified? can you walk me through the steps?

George has seven boxes of five pencils. giulio three boxes of eight pencils. one of the boys arranges all his pencils equally into two groups. was this george or giulio how many are in each group explain

If p(a) = 0.70 and p(b) = 0.20, then a and b are independent events if

In a small section of a stadium there are 40 spectators watching a game between the cook islands and fiji. they all support at least one of the two teams. 25 spectators support the cook islands and 16 of these support both teams. how many support only fiji?