Mckenzie bought 1.2 pounds of coffe for $11.82. what was the cost per pound?

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

Need solving this second acceleration problem.

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.