Athermometer shows a temperature of -20 degrees. a chemist recorded this temperature in her notebook using a decimal.
which number did the chemist write in the notebook?

Solve the system of equations y= 3/2 - 1, -x+ y =-3

Write and solve a real word problem that involves determining distance on a coordinate plane

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?