Which expressions represent the width of the door in the diagram? And please show how you got the answer because it’s a two-part thing?

A. .

Step-by-step explanation:

In the diagram given, the door is located in the middle of the length of the diagram.

The length of the diagram =

The width of the door is part of the .

x and x, are the remaining part of .

To get the width of the door, x, and x, needs to be subtracted from .

Therefore, the width of the door = .

you cant answer this dummy

step-by-step explanation:

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18