If c = 15 and y = 7, find the value of x.

Match the term on the left with its image or description on the right. match term definition diameter a) circle a and a line segment connecting points b and c which are on the circle. circumference b) circle a and a line segment connecting points b and c which are on the circle. radius c) a piece of the circumference of a circle secant d) two circles that share the same center. concentric circles e) the distance around a circle arc f) a segment between two points on a circle that passes through its center

Nine more than four times a number is the same as one less than twice the number. find the number?

Asystem of equations has 1 solution.if 4x-y=5 is one of the equations , which could be the other equation ?