I think the answer is 5.
Sorry if it's wrong.
Answer:
5
Explanation:
This question is based on vector
By applying its formula
AC = AB + BC
we were given AC as 14 and BC as 9 so let find AB
14 = AB + 9
AB = 14 – 9
AB = 5
i hope this helped
7.8m questions
10.5m answers