Which polynomial is in standard form? 3xy+ 6x®y2 - 4x4 y2 + 19x7y4
18x5 - 7x2y-2xy? + 1774
x5y5 – 3xy-11x2y2 + 12
15+ 12xy2 - 11x®ys +5x?y2 h

Which value of m will create a system of parallel lines with no solution? y = mx - 6 8x - 4y = 12

Two airplanes start at the same place and travel in opposite directions,one at 395 miles per hour and the other at 422 miles per hour. how many hours will it take for the planes to be 2451 miles apart?

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?