The two-column proof below describes the statements and reasons for proving that corresponding angles are congruent. What is the missing statement for step 7?

What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*

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?