Question

1. find ac.

a 10 b 3 c

Explanation:

Step1: Identify segment - addition postulate

By the segment - addition postulate, $AC=AB + BC$.

Step2: Substitute given values

Given $AB = 10$ and $BC = 3$, then $AC=10 + 3$.

Step3: Calculate the result

$AC=13$.

Answer:

$13$