Find the area of the circle. Round your answer to the nearest tenth. 9 mm
area: about
mm2

Which expression shows the sum of the polynomials with like terms grouped together

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?

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?