Phillies riding his bike he rides 20 miles in two hours 37 1/2 miles in three hours and 50 miles in four hours find the constant of proportionality and write any equation to describe the situation

Three cylinders have a height of 8 cm. cylinder 1 has a radius of 1 cm. cylinder 2 has a radius of 2 cm. cylinder 3 has a radius of 3 cm. find the volume of each cylinder ( ! : ”0 )

Solve the given system of equations. 2y= -x+9 , 3x-6= -15

Jack has a piece of red ribbon that is two times as long as his piece of blue ribbon. he says that he can use two different equation to find out how long his piece of red ribbon is compared to his piece of blue ribbon is. is he correct? explain his reasoning