Factor the gcf: −6x4y5 − 15x3y2 + 9x2y3 (5 points)
−3x2y2(2x2y3 − 5x + 3y)
−3x2y2(2x2y3 + 5x − 3y)
3x2y2(2x2y3 + 5x − 3y)
−3(2x4y5 + 5x3y2 − 3x2y3)

Acar travels at an average speed of 56 miles per hour. how long does it take to travel 196 miles

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?