Answer:
18 units
Step-by-step explanation:
A picture of what it would look like is at the bottom.
You know that the legs are equal because it's isosceles, so AB = AC. This means:
[tex]4x - 14 = x + 10\\3x - 14 = 10\\3x = 24\\x = 8[/tex]
using the rules of solving an equation.
The length of one leg is:
[tex]x + 10\\8 + 10\\18[/tex]
