amy wants to buy some notebooks that cost $3 each and a $16 book. she has $40. howmany notebooks can she buy?

The triangles are similar. what is the value of x? show your work.

The two square pyramids are similar. find the total volume of both pyramids if the ratio of their surface areas is 9/16

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.