10 cards are numbered from 1 to 10 and placed in a box. one card selected at random and is not replaced. another card is then randomly selected. what is the probability of selecting two prime numbers?

If w = 6 units, x = 3 units, and y = 5 units, what is the surface area of the figure? 168 units2 240 units2 144 units2 96 units2

In the picture below, line pq is parallel to line rs, and the lines are cut by a transversal, line tu. the transversal is not perpendicular to the parallel lines. note: figure is not drawn to scale. which of the following are congruent angles?

Find two numbers if their ratio is 4: 7 and their difference is 123.