Abus driver follows a morning route and an afternoon route each day. because there are more cities on the morning route, the average speed is 12 miles per hours less than the afternoon route. she covers 70 miles on the morning route in the same amount of time she covers 100 miles on the afternoon route. find the average speed on the afternoon route

(hurry! ) which expression is equivalent to the following complex fraction?

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.

Find the area of the triangle formed by the origin and the points of intersection of parabolas y=−3x^2+20 and y=x^2−16.