In need of help plz. help fast In Euclidean Geometry two lines intersect at only one point. How many common points do lines in spherical geometry have?

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

Select the sequences that are geometric.

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?