Respuesta :

Answer:

8

Step-by-step explanation:

Look like BC is 15 and AC is 17

The Pythagorean Theorem states that a^2 + b^2 = c^2

so AC^2 = AB^2 + BC^2

17^2 = AB^2 + 15^2

289 = AB^2 + 225

AB^2 = 64

AB = 8