Mr. romero attached a ramp to the base of a window sill so that the family cat could more easily climb into it. the ramp is 84 inches long. the window sill is 50 inches above the floor. what is the distance from the base of the ramp to the base of the wall?

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.