Which equation can be used to find the unknown length, b, in this triangle? 5 in.
b
4 in
0 4²+ b² = 52
O42- 52 - 52
52 +42-b2
52+b? - 42

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.