Answer:
x = 
Step-by-step explanation:
Given
+
= 1
Multiply through by ab to clear the fractions
bx + ax = ab ← factor out x from each term on the left side
x(b + a) = ab ← divide both sides by (b + a)
x = 
I believe it would be 12, I believe this because its states that it is TWICE as long therefore is made from the same metal so 6x2=12
The line that is being constructed in the series of diagrams provided is perpendicular.
I think you times all of the inchs together. 5x3x2=30.
I dont know if i am right tho. Hope this help ya.