Ask your own question, for FREE!
Mathematics 13 Online
OpenStudy (anonymous):

Which ratio forms a proportion with 15 over 21.? 20 over 26. 7 over 5. 20 over 28. 12 over 18.

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!