we get the length of AC as 14 units.
We are given that the length of AB = 4.
We are also given the expressions:
AC = x and BC = 2 x - 18
We need to find the value of AC
We know that:
AB + BC = AC
Substituting he values, we get that:
4 + 2 x - 18 = x
2 x - 14 = x
2 x - x = 14
x = 14
So, we get that,
AC = x
AC = 14 units.
Therefore, we get the length of AC as 14 units.
Learn more about expression here:
https://brainly.com/question/22048677
#SPJ9