9 Flying Home A bird flies from the bottom of a canyon that is 90
10
feet below sea level to a nest that is 731 feet above sea level. What is the difference in
elevation between the bottom of the canyon and the bird's nest?
The difference between the elevation of the canyon and the bird's nest is feet.
(Simplify your answer. Type an integer, proper fraction, or mixed number.)

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.