Which expression is equivalent to b^-2/ab^-5?
a) a/b^5
b)1/ab^5
c)a^3b/1
d)b/a

Ajar of gumballs contains 4 reds, 2 greens, and 6 blues. what is the probability of getting two blues in a row without replacement?

The number if marbles of different colors stored in a hat is listed below: 4 red marbles 10 green marbles 7 blue marbles. without looking in the hat, dan takes out a marble at random. he replaces the marble and then takes out another marble from the hat. what is the probability that dan takes out a blue marble in both draws?

Atriangle with all sides of equal length is a/an triangle. a. right b. scalene c. equilateral d. isosceles