Does the following system of equations have a solution? if so, find one. if not, explain why not. 2x+y+z=4, x-y+3z=-2, -x+y+z=-2.

x=2, y=1, z=-1

Step-by-step explanation:

Given

2x+y+z=41

x-y+3z=-22

-x+y+z=-23

Add 2 & 3 we get

4z=-4

z=-1

Put value of z in 1 & 2

2x+y-1=4

2x+y=53

x-y+3(-1)=-2

x-y=14

add 3 & 4 we get

x=2

Put x & z in 1

y=1

7 ft 6 in means 7 1/2, because 6 in is 1/2 of a foot. 7 ft 8 in means 7 2/3 because 8 in is 2/3 of a foot. 23/3 = 7 2/3. 15/2 = 7 1/2.

23/3   *   15/2   = 57 1/2

step-by-step explanation:

where are the images of the functions i can only see the question you typed.

step-by-step explanation: