What is 7 4/5 + 8 8/9

21 type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar. the solution set of n2 - 14n = -45 is { (separate the solutions with a comma)

Tom drove 206 miles in 3.9 hours. estimate his average speed.

Ron has 8 caps and 4 of his caps are blue. thes rest of his cap are red. how many of ron's caps are red