Abag contains 2 red marbles and 4 green marbles. two marbles are drawn at random. one marble is drawn and not replaced. then a second marble is drawn. what is the probability that the first marble is green and the second one is red?

Me max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.

The anwser cause i do not understand just plez

Idon't get undoing if its pass adding and subtracting so can someone ? x-2 over 5 = 18