I’m thinking of two numbers. their greatest common factor is 6. their least common multiple is 36. one of the numbers is 12. what is the other number?

Ineed with number 17 i don’t get it at alll

Samantha swam upstream for some distance in one hour. she then swam downstream the same river for the same distance in only 12 minutes. if the river flows at 4 mph, how fast can samantha swim in still water?

Aline on the wall and a line on the floor are skew. always, sometimes, or never?