The ratios a: b and b: c are equivalent to one another select all the statements that must be true 1. a=c 2. 3. b-a=c-b 4. a 5. if a=b, then b=c i think #2 is correct ,but i don't know about the others

A : b
b : c

Imagine if the ratio is as follows :
3 : 6
6 : 12

Yes, only number 2 is correct.

Your number 4 seems to only consist of a. Hence, I can't make any assumptions based on that.

So yes, only number 2 is correct.

Hope this helps. - M

Istg idk..if there all the same length there all the same number but use google

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