A robot can complete 7 tasks in 3 4 hour. Each task takes the same amount of time

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.

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab

Is the number 128.439 a rational number