How many solutions exist for the giving equation? 3(x+10)+6=3(x+12)

Which of the following can be used to explain a statement in a geometric proof?

Michael split a rope that was 28 inches long into 5 equal parts. brenden split a rope that was 30 inches long into 6 equal parts. which boy's rope was cut into longer pieces?

Tanyss's house has 25 windows. her brother has washed 22 of the windows. what percent of the windows has her brother washed?