Abowl contains 10 red balls, 5 blue balls, and 8 green balls. a woman selects balls at random without looking in the bowl. how many balls must she select to be sure that she has at least one ball of each color

When y’all answer can y’all explain too !

Monitors manufactured by tsi electronics have life spans that have a normal distribution with a standard deviation of 1800 hours and a mean life span of 20,000 hours. if a monitor is selected at random, find the probability that the life span of the monitor will be more than 17,659 hours. round your answer to four decimal places.

What is the cube root of -1,000p^12q3? -10p^4 -10p^4q 10p^4 10p^4q