Is the following definition of supplementary reversible. if yes, write it as a true biconditional.
supplementary angles are two angles whose measures sum to 180
a)yes, if angles are supplementary, then their measures sum to 180
b)yes, angles are supplementary if (and only if) their measures sum to 180
c)yes, angles are supplementary if their measures sum to 180
d)the statement is not reverseable

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.