Answer:
A) x=4
Explanation:
-We know that the triangles are equal by using Angle-Angle-Side theorem.
-Take one of the triangles.
-We know that the base of the triangle will be 3 on both sides because they are both equal.
-By using the Pythagorean theorem, we can now find the answer for x.
5^2=3^2+x^2
25=9+x^2
subtract 9 from both sides.
16=x^2
To 'undo' the squaring of the x, we need to take the square root on both sides.
The answer would be 4 because 4^2 equals 16.
x=4