Solve: -1/2 x + 2 = –x + 7
a 10
b 5/2
c 2/5
d 20
plz explain

In the diagram, the measure of angle 9 is 85° which angle must also measure 85°?

Solve 2x2 + 8 = 0 by graphing the related function. there are two solutions: . there are no real number solutions. there are two solutions: 2 and -2

Thee blue triangle has rotated from quadrant i to quadrant iii about the origin. describe the effects of the rotation on the coordinates of the blue triangle.