Given lines l, m and n are all parallel and cut by two transversal lines, find the value of x.
X
2
m
10
5
n

Submit Answer

x = 4.

Step-by-step explanation:

The 2 trapezia are similar so we have:

x/ 10 = 2/5

5x = 20

x = 4.

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