2. What value of x makes the equation below true? 12 + 2x + 12
(a) Not possible
(b) 0
(c) 12
(d) -12

What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2

What additional information could be used to prove abc =mqr using sas? check all that apply.

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?