60 What is the value of x in the equation x - y = 30, when y= 15?
O. 4
O. 8
O. 80
O. 200

He that is measured at 220° is a reflex angle. the opposite angle is obtuse. find the measure of obtuse .

Need so much on this one how many yards?

Examine this system of equations. what integer should the second equation be multiplied by so that when the two equations are added together, the x term is eliminated? 3/4x+1/7y=6 1/8x-3/5y=16