Answer:
8
Explanation:
The given is a special right triangle with angle measures
90-60-30 and side lengths represented by
2a-a
-a
x is the side length that sees angle measure 90 degrees so it's represented by 2a
and 4
is the side length that sees angle measure that sees 60 degrees so the value of a is 4
therefore x = 2*4 = 8