Question

find the missing segment length / encontrar la longitud del segmento que falta

Explanation:

Step1: Identify the relationship

The length of the whole segment AC is composed of AB and BC. So, \(AC=AB + BC\).

Step2: Rearrange to find AB

We know \(AC = 15\) and \(BC=9\). Then \(AB=AC - BC\).
\[AB=15 - 9\]
\[AB = 6\]

Answer:

6