Rebecca started with 30 pieces of candy and gave away x
pieces. ana started with 45 pieces of candy and gave away
twice as many pieces as rebecca did. how many pieces of
candy did rebecca give away if they had the same number of
pieces of candy left?

How many grams are in 8 kilograms? if 100 grams = 1 kilogram

Which of the functions graphed below has a removable discontinuity?

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?