HELP ASAP PLEASE!! What is the scale factor from triangle ABC to triangle A'B'C'?

Answer:
A to B is 3
B to C is 5
A to C is 3
Step-by-step explanation:
i think right
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Answer:
4/3
Step-by-step explanation:
The scale factor is ...
A'B'/AB = 4/3
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Other ratios confirm this:
C'B'/CB = (5 1/3)/4 = 4/3 = C'A'/CA