Adollhouse has a bed with dimensions 1/12 the size of a queen-size bed. a queen-size bed has an area of 4,800 square inches, and a length of 80 inches. what are the side lengths of the dollhouse bed?

Abag contains 4 red, 7 blue and 5 yellow marbles. event a is defined as drawing a yellow marble on the first draw and event b is defined as drawing a blue marble on the second draw. if two marbles are drawn from the bag, one after the other and not replaced, what is p(b|a) expressed in simplest form? a. 7/16 b. 7/15 c. 14/16 d. 14/15