The sprinkler in rob's sprinkler system waters a circular area. the sprinkler is in an open part of rob's lawn and waters up to 18 feet away. what is the area the sprinkler can water? show your work. use 3.14 for /pi and round to the nearest square foot.

What is the 12th term of b(n)=-4-2(n-1)

James was playing a game with his friends. he won 35 points. then he lost 15, lost 40 and won 55. how did he come out

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?