What is the value of x?

the values of x is 4

Step-by-step explanation:

diagonals of a parallelogram bisect each other which means the divide each other into 2 equal parts.

that means

2x=8 and 3x=12

x=8/2 and x=12/3

x=4 and x=4

on your paper it doesn't say the answer but the the answer is altitude

step-by-step explanation:

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