Altitude above sea level is given in positive values and below sea level is
given in negative values. If Yancey started
at 1,287 meters above sea level and
decreased his altitude by 4,165 meters
before increasing his altitude by 2,039
meters, what was his final altitude?

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.

Find the power set of each of these sets, where a and b are distinct elements. a) {a} b) {a, b} c) {1, 2, 3, 4} show steps

Do u add or subtract after u multiply