MATH
posted by BIAO .
POINTS A, B, AND C ARE COLLINEAR. IF AB=7AM AND BC =13CM WHAT IS AC ANSWER

MATH 
Dr Russ
Please do not type in capitals it is hard to read and is considered to be shouting.
If the points are colinear then there are three possible arrangements
1. ABC
2. ACB
3. BAC
if AB=7 cm and BC = 17 cm then arrangement 2 is not possible because 7cm is not greater than 13 cm
In arrangement 1
A 7 cm B 13 cm C
so AC= 20 cm
In arrangement 3
B 7 cm A 7 ??x?? C and BC = 13 cm
so AC = 6 cm
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