Respuesta :

DeanR

Isoceles triangle; half the base is one leg of a right triangle; that's 5.  The height of 12 is the other leg, 5/12/13 is a common Pythagorean Triple.

Answer: D) x=13

Answer:

d.13

Step-by-step explanation:

use pythagorean theorem

a^2+b^2=c^2

5^2+12^2=c^2

25+144=c^2

169=c^2

find the square root of 169

it's 13

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