Brooklin draws one card at random from an ordinary deck of 52 cards. What is the probability of her drawing: a. an ace or a king?

b. a red card or black card?

c. a heart or a spade?

d. an ace or a diamond

USING P (A U B) , P(A ∩ B)

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?

Find │7│. a. 1 over 7 b. –7 c. 7 asap i always mark brailiest who me so

Subtract and simplify. (-y^2 – 4y - 8) – (-4y^2 – 6y + 3) show how you got the answer if your answer is right i will mark you