Answer:
[tex]AC=16[/tex]
Step-by-step explanation:
This is an isosceles triangle so these 2 sides are equal to each other so to first find x we set them equal then solve
[tex]7x-12=2x+8[/tex]
Add 12 to both sides
[tex]7x=2x+20[/tex]
Subtract 2x on both sides
[tex]5x=20[/tex]
Divide both sides by 5
[tex]x=4[/tex]
Now we need to fill in the value of x to find AC
[tex]7(4)-12\\28-12\\16[/tex]
I hope this helps
