Answer:
x = 13
Step-by-step explanation:
The law for the sides of a 45°-45°-90° triangle is that the opposite sides will equate to 1-1-√2 (√2 being the hypotenuse).
It is given that the hypotenuse (the side opposite of the right angle) is the largest, and equates to √2. To solve for the 1-sides (x), simply divide the measurement of the hypotenuse by √2:
[tex]\frac{13\sqrt{2} }{\sqrt{2} } = 13[/tex]
13 will be your length for x.
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Learn how to solve with the Pythagorean theorem, here:
https://brainly.com/question/29248228
