The answer is 25 units
Explanation:
As shown in the figure, angle A is congruent to angle C.
so the triangle is isosceles.
ABC is isosceles, so AB = BC
Finding x:
5x + 5 = 7x - 1
5x - 7x = -1 -5
-2x = -6
2x = 6
x = 6/2 = 3
AC = 6x +7 we have x = 3
So:
AC = 6×3 +7 = 18 + 7 = 25 units
