The ratio of girls to boys in liza’s classroom is 5 to 4 . how many girls are in her classroom if there is a total of 27 students?

6x - 8 = 16 solve the following equation. then place the correct number in the box provided.

Factor the expression using gcf 9b+45

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.