What is the base shape of a cylinder

X+ y = 5 ; x - y =3 solve using linear combination

Carlos spent 1 1/4 hours doing his math homework he spent 1/4 of his time practicing his multiplication facts how many hours to carlos been practicing his multiplication facts

Ade and abc are similar. which best explains why the slope of the line between points a and d is the same as the slope between points a and b?