Solve the system by substitution. 2x - y + z = -4
z = 5
-2x + 3y - z = -10

A. (–8, 7, 5)
B. (–8, –7, 5)
C. (8, –7, 5)
D. (–8, –7, –5)

The general form of the quetion of a circle is ax^2+by^2+cx+dy+e=0 where a=b=0 if the circle has a radius of three units and the center lies on the y axis which set of values of a, b, c, d, and e might correspond to the circle

Solve 3x-18=2y and 5x-6y=14 by elimination or substitution . show all !

Given the median qr and trapezoid mnpo what is the value of x?