The mean mass of four women is 60 kg. another women has a mass of 70 kg work out the mean mass of five women

Using two or more complete sentences, describe how you can find a vector parallel to b=-2,3

Anyone know? will mark brainliest if correct!

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?