In my class 55 percent of the kids are girls. whats the percentage are boys?

Ared balloon starts at 7.3 meters off the ground and rises at 2.6 meters per second. a blue balloon starts at 12.4 meters off the ground and rises at 1.5 meters per second. when will the balloons be at the same height?

If square root x = -7, then x= -49 true or false

What are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2