Question

what is the solution to the system of equations
|{ x-2y+z=10
<|{ z=6
|{ 3x-2y+2z=8

the possible answers are
(0,-2,6)
(0,2,6)
(-1,2,6)
(0,2,-6)

Answer 1

none of those answers make any sense with the stated problem. You can dbl check them by working the backwards; plug the values into the equations and see if they are true.

Answer 2

k

Answer 3

its the first one?

Answer 4

x-2y+z=10 <-- (0,2,6) makes this false
z=6 <-- (0,2,-6) makes this false
3x-2y+2z=8 <-- (0,-2,6) makes this false

Answer 5

x-2y+z=10 ; (-1,2,6)?

-1 -2(2) +6 = 10
-1 -4 +6 = 10
-5 +6 = 10 .. FALSE

Answer 6

none of them satisfy all the equations

Answer 7

but the first one satisfies two out of three so thats the best answer

Answer 8

it's 0,2,6!!!!!