What are the measures of center

Answer asap and if you do you will get brainliest. catherine buys a gallon of ice cream from the store. after taking it home, she eats a fifth of a gallon of ice cream. her sister eats some of the ice cream as well. if two-thirds of the original amount of ice cream is left, then what fraction of a gallon of ice cream did her sister eat?

Match the one-to-one functions with their inverse functions.

Acute identify < 1 and < 2 select all that apply of the following acute, right, obtuse, adjacent, vertical, complementary, supplementary