MATH
posted by BIAO .
POINTS A,B,AND CARE COLLINEAR .IF AB=7CM AND=13CM, WHAT IS AC'S ANSWERS

Please write in "proper case", it is easier to read.
"Points A,B, and C are collinear. If AB=7 cm and ??=13 cm, what are AC's answers? "
Need to confirm what is 13 cm.
In this case, I assume BC to be 13 cm.
There are two possibilities:
A7B13C
or
C6A7B
Bet you can take it from here.