Solving for Angle Measures of Right Triangles — Unit test Answers

The two-way table shows the medal count for the top-performing countries in the 2012 Summer Olympics.Which statement is true?

A department store is hiring for the positions of manager, associate manager, and assistant manager. If 15 people have applied for all the positions and are equally qualified for each position, in how many ways can the positions be filled?

A bag contains 10 red marbles, 15 yellow marbles, 5 green marbles, and 20 blue marbles. Five marbles are drawn from the bag.What is the approximate probability that exactly two of the five are blue?

A standard deck of 52 playing cards contains 13 cards in each of four suits: diamonds, hearts, clubs, and spades. Two cards are chosen from the deck at random.What is the approximate probability of choosing one club and one heart?

Which expression represents ?