Which angle pairs are supplementary? Check all that apply.
Angle 1 and angle 2
Angle 4 and angle 3
Angle 4 and angle 5
Angle 7 and angle 5
Angle 3 and angle 6

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

Weekly wages at a certain factory are normally distributed with a mean of $400 and a standard deviation of $50. find the probability that a worker selected at random makes between $450 and $500

What number line represents the solution set for the inequality -1/2 greater than or equal to 4