Answer:
x = 5
Step-by-step explanation:
Applying the Pythagorean Theorem to this equation is a very good idea:
Formula for Pythagorean T. - a2 + b2 = c2
We know what one 'leg' and they're asking us what the other one is
We also know that the hypotenuse is 13 since it is in the biggest side of the triangle
Let's solve with what we know:
a² + b² = c²
a² + 12² = 13²
a² + 144 = 169
a² = 169 - 144
a² = 25
a= √25
a = 5
So the answer for our missing 'leg' is 5
Hope this helps
