Which set of ordered pairs represents a function? answer choices {(2, 1), (5, 3), (6, 4), (1, 4)} {(5, 12), (7, 34), (9, 3), (9, 41)} {(5, 6), (5, 23), (4, 71), (3, 41)} {(11, 62), (11, 24), (4, 75), (31, 21)}

One card is dealt from a 52 card deck. find the probability that the dealt card is a 4 or a black 7

2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?

5, 6, 10 question: a. determine whether the side lengths form a triangle. (explain your reasoning) b. if it is a triangle, determine whether it is a right, acute, or obtuse triangle. (show your work)