On a number line the distance from zero to -8 is 8 units . which equation demostrates this concept ?
8 square = 64
(-8) =8
(-8) = -8
0+ 8 = 8

Three numbers x, y, and z are in the ratio 2: 7: 8. if 12 is subtracted from y, then three numbers form a geometric sequence (in the order x, y–12, z). find x, y, and z. there are 2 sets.