The half life of a substance is defined as the period of time it takes for the amount of the substance to decay by half .The sequence below shows the amount of a substance that will be left after a certain number of half lives have elapsed 1/2,1/4,1/8

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.

There are three bags: a (contains 2 white and 4 red balls), b (8 white, 4 red) and c (1 white 3 red). you select one ball at random from each bag, observe that exactly two are white, but forget which ball came from which bag. what is the probability that you selected a white ball from bag a?

Given sin28.4=.4756, cos28.4=.8796, and tan28.4=.5407 find the cot of 61.6