Create a memory device to help you remember the quadratic formula. The device could be a song, drawing, rhyme, mnemonic device, or anything else you can think of that would be useful to you. Post to the discussion board your idea (or upload your drawing, recording, video, etc.).
Read another student’s post and comment on it. Be polite!
What did you like about the student’s memory device?
Respond to replies about your post.

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?