Answer:
If the answer is 13.5 then the answer is 13.5
Step-by-step explanation:
Well, first we have to start off with 13.5 = x in order to find it later on.
Then we can do operations to both sides
13.5 = x
27 = 2x
27²=4x²
729 = 4x²
then if we subtract 4x² from both sides we can use the quadratic formula to derive x
-4x² + 729 = 0
Where a = -4, b = 0 and c = 729
plug it in to the quadratic formula
x = (-b±
) / 2a
x = (-0±
) / 2(-4)
x = (-108)/-8 = 13.5
There we go! there's our answer