Respuesta :

dcyclist1

Answer:

The 4th one: 3^2 + 13^2 = x^2

Step-by-step explanation:

The pythagorean theorem is a^2  + b^2 = c^2. In this case 3 is a, 13 is b, and x is c.

happy to help
actually a is 3, b is x, and 13 is c. the c is always across from the right angle