Find the sum of the exterior angles of a .

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

y=2x−1 5x−4y=1 is (1,1)(1,1) a solution of the system?

Whats the theoretical probability of popping a polka dot balloon? express your answer as a fraction, decimal and percent solid 15 polka dot 5 striped 17 plzz me due tomorrow