In a bag there are blue discs and white discs. there are eight times as many blue discs as green discs. Numberof blue discs: number of white discs=6:5.one disc is selected at random. workout the probability that the disc is either blue or white.

Arectangle has a width of 9 units and length of 40 units. what is the length of a diognal. a. 31 unitsb. 39 unitsc. 41 units d. 49 units

Iam a rectangle. my perimeter is 60 feet. how much are do i cover?

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.