524127 add mathematical signs (+, -, ), (*, /) in between all or some oft he above digits so the result of the created mathematical equation will be 100

Can someone me out here and the tell me the greatest common factor

Moira has a canvas that is 8 inches by 10 inches. she wants to paint a line diagonally from the top left corner to the bottom right corner. approximately how long will the diagonal line be?

Jimmy can run 3.5 miles in 20 minutes. how far can ne run in one hour and ten minutes?