If two cards are drawn without replacement from a standard deck, find the probability that the first card is a heart and the second card is black.

The sum of two numbers is 86, and their difference is 20. find the two numbers

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?

The graph shows the distance kerri drives on a trip. what is kerri's speed?