The probability of an event is 3/8. What is the probability the event will not happen

Answer choice:
3/8
5/8
37.5%
38%

17 in long 1.3 ft wide and 8in high what is the volume

What is the value of x in the equation (2)3) (x+6)= -18 a. -36 b. -33 c. -24 d. -18

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?