the answer is x= 4
AB and CD are the same length
8x-1 =31
8x=32
x=4
The answer is x equals 24
you set up a proportion new over old
so for red cars 40 over 5
since we don’t know the new for blue cars we’ll use x
so x over 3
we then make them equal to each other
40 x
—- = —-
5 3
cross multiply, then we get
120=5x
isolate the x by dividing 5 from both sides to get 24
The answer would be A.132 because when you add the corner length to 90 it equals 132
