The length of [tex]AC[/tex] is [tex]6[/tex].
Given:
In triangle [tex]ABC, \angle A\cong \angle C,AB=x+4,BC=3x-8,AC=x[/tex].
To find:
The length of [tex]AC[/tex].
Explanation:
In the given triangle, two angles are congruent and we know that the base angles of an isosceles triangle are congruent. It means the triangle [tex]ABC[/tex] is an isosceles triangle with [tex]AB=BC[/tex].
[tex]x+4=3x-8[/tex]
[tex]x-3x=-4-8[/tex]
[tex]-2x=-12[/tex]
Divide both sides by [tex]-2[/tex].
[tex]x=6[/tex]
Now,
[tex]AC=x[/tex]
[tex]AC=6[/tex]
Therefore, the length of [tex]AC[/tex] is [tex]6[/tex].
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