The point E in the parallelogram is located at the crossing point of the diagonal line. It can be concluded that the distance of AE is equal to CE, or equal to 1/2 AC. Then you can get three equation like this: AE=CE <span>AE=x^2−8 CE=2x .
Using these equation you can find the value of x AE= CE </span>x^2−8 = 2x x^2−2x-8 = 0 (x- 4) (x+2) x1= 4 x2= -2
Excluding the minus result, you can get that AE= CE= 4 Then AC would be: AC= AE+CE AC= 4 + 4= 8
when converting a percentage to a decimal you have to move the decimal point over two times to the left. do if you have 100% you moved the decimal point over two and get 1.00
