Someone please help me immediately, who ever answers get brainliest, and gets 50 points.

In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class

The two cylinders are similar. if the ratio of their surface areas is 9/1.44 find the volume of each cylinder. round your answer to the nearest hundredth. a. small cylinder: 152.00 m3 large cylinder: 950.02 m3 b. small cylinder: 972.14 m3 large cylinder: 12,924.24 m3 c. small cylinder: 851.22 m3 large cylinder: 13,300.25 m3 d. small cylinder: 682.95 m3 large cylinder: 13,539.68 m3

Why is x= 4 a solution to the proportion 14/x 56/1 6