Multiply each by the same constant and you'll get another ratio ie. 5/7 --> 10/14 --> 15/21
I’ll ik is that number 6 is proportional
B. I think it’s b but I’m not sure
Answer:

Step-by-step explanation:
The only Pythagorean identities are:




Therefore,
is correct as it's one of the pythagorean identities.