There are 12 boys and 13 girls in a class. If the teacher randomly chooses a student's name out of a hat, what is the probability it will be a girl? ◯ 48%
◯ 50%
◯ 52%
◯ 92%

Aswimming pool has an input pump for filling the pool and an output pump for emptying the pool. the input pump can fill the pool in 3 hours, and the output pump can drain the pool in 5 hours. as you go to bed, the pool is full, but a neighbor’s kid turns on the output pump. at midnight, you awake to find the pool half empty. immediately, you turn on the input pump, but you are sleepy and forget to turn off the output pump. at what time will the pool become full?

What is the solution to the system of equations? (–2, –8) (–1, –5) (0, –2) (2, 4)

Complete the solution of the equation. find the value of y when x equals to 1 9x-5y=29