I really need help on this

10

Step-by-step explanation:

Step 1:

4x = 3x + 10         Corresponding ∠'s

Step 2:

4x - 3x = 10        Subtract 3x on both sides

x = 10

Hope This Helps :)

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

the answers might not be correct use at own risk

your answer would be 12