31. what is the solution to the system of equations? -7x-2y+z=-2 6x-y-z=-18 5x+4y-z=18

x = -1, y = 7, z = 5

use 2. - 3.

= -1 -5 0 -36 --- 4.

use 1. + 2.

= -1 -3 0 -20 --- 5.

use 4. + 5.

= 0 -8 0 -56

=> y = 7

y = 7 back into 5.:

x - 35 = -36

=> x = -1

x = -1 and y = 7 back into 1.:

7 - 14 + z = -2

=> z = 5

good for u

step-by-step explanation:

false

step-by-step explanation:

rulers and compasses arent required in order to bisect an angle because when bisecting angles, you're making a "half circle" and considering in order to bisect an angle it wouldn't be straight, you wouldn't need either of the two