15.
10. a coin-operated machine sells plastic rings.
it contains 14 pink rings, 10 green rings,
9 purple rings, and 13 black rings. sarah puts
a coin into the machine. find the theoretical
probability she gets a pink ring. express your
answer as a decimal. if necessary, round
your answer to the nearest thousandth.

What is the point-slope equation of a line with slope -5 that contains the point (6,3)

How do you determine if an ordered pair is a solution to a given equation?

Consider a bag that contains 220 coins of which 6 are rare indian pennies. for the given pair of events a and b, complete parts (a) and (b) below. a: when one of the 220 coins is randomly selected, it is one of the 6 indian pennies. b: when another one of the 220 coins is randomly selected (with replacement), it is also one of the 6 indian pennies. a. determine whether events a and b are independent or dependent. b. find p(a and b), the probability that events a and b both occur.