From stations a to b, the distance between which is 910 mi, two trains left simultaneously moving towards each other. the speed of one train was 10 mph greater than the speed of the other one. in 5 hours the trains met. find the speed of each train.

Cor d? ? 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.