In Rosa's collection, the ratio of rings to bracelets is 2 to 3. The ratio of bracelets to necklaces is 2 to 6. If Rosa has 10 rings, how many necklaces does she have?

Mrs. morton has a special reward system for her class. when all her students behave well, she rewards them by putting 3 marbles into a marble jar. when the jar has 100 or more marbles, the students have a party. right now, the the jar has 24 marbles. how could mrs. morton reward the class in order for the students to have a party?

Pls brainliest will be awarded if answer is correct

If the diagram polygon abcd is a reflection across ef to make polygon a'b'c'd'.