What is the solution to the system of equations below? 3x + y + 2z = 18
8y +Gz = 36
12y +2 z = 12

What is the frequency of the sinusoidal graph?

Awindow washer cleans 42 windows in 2 hours. at this rate, how many windows did he clean in 180 minutes.

If two parallel lines are cut by a transversal, interior angles on the same side of the transversal are supplementary. a. always b. sometimes c. never