Quadrilateral DONE has vertices (-2,-4), (7,-4), (-2,5), and (7,5), respectively.

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}

In a test for esp (extrasensory perception), a subject is told that cards only the experimenter can see contain either a star, a circle, a wave, or a square. as the experimenter looks at each of 20 cards in turn, the subject names the shape on the card. a subject who is just guessing has probability 0.25 of guessing correctly on each card. a. the count of correct guesses in 20 cards has a binomial distribution. what are n and p? b. what is the mean number of correct guesses in 20 cards for subjects who are just guessing? c. what is the probability of exactly 5 correct guesses in 20 cards if a subject is just guessing?