Answer:
33.75
Step-by-step explanation:
We know that the perimeter is 90. The opposite side of 6x is 6x and the opposite side of 2x is 2x.
Combine like terms.
2x + 2x + 6x + 6x = 90
4x + 12x = 90
Divide both sides by 16.
16x = 90
----- ----
16 16
x = 5.625
Check:
Now we check to see if it adds up to 90 when we add them all together.
2(5.625) + 2(5.625) + 6(5.625) + 6(5.625) = 90
11.25 + 11.25 + 33.75 + 33.75 = 90
22.5 + 67.5 = 90
90 = 90
