Help me please this is due in a day! And I got so confused. So can you guys help? By filling in the blanks(empty box) with the answer and the names are in the picture. Thanks I need to get this right to pass my math 0¥0

Simplify the expression. -2/5(10+15m-20n)

Need now 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.

Ineed with this problem 21 show steps