Find the missing right triangle side lengths in the models of the Pythagorean thereon below

What are “like terms”? why can we only add like terms?

17 in long 1.3 ft wide and 8in high what is the volume

Last year, a state university received 3,560 applications from boys. of those applications, 35 percent were from boys who lived in other states. part a)how many applications did the university receive from boys who lived in other states? part b)applications to the university from boys represented 40percent of all applications. how many applications did the university receive in all? i don't how to do part b so me and plz tell how you got your answer