Pedro took a bicycle ride as follows - he rode for 1.5 hours at a rate of r miles per hour

- he then increased that rate by 2 miles per hour and rode for 2.5 more hours

which equation can be used to determine the value of r ?

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.