Answer:
26
Step-by-step explanation:
AC = AB + BC
Since B is the midpoint
AB = BC
AC = AB + AB
Combine like terms
AC = 2 AB
8x-20 = 2(3x-1)
Distribute
8x-20 = 6x-2
Subtract 6x from each side
8x-6x -20 = 6x-6x -2
2x-20 = -2
Add 20 to each side
2x-20+20 = -2+20
2x= 18
2x/2 = 18/2
x =9
We want to find BC
We know BC = AB = 3x-1
BC = 3(9) -1
= 27-1
= 26
