Ethan has a small coin collection. nine of his coins he collected from traveling. six of his coins he received from friends. what is the ratio of coins he collected from friends to the total coin in ethan's collection? 2: 3 2: 5 9: 6 1: 5

Yuri, sam and dani had the same math homework last night, but none of them finished it. yuri finished 3/8 of her homework, sam finished 4/6 of her homework and dani finished 1/2. who finished the most math homework? who finished the least amount?

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?

Factor the polynomial. b^2 + 4b + 4