The school is 2.3 miles away from the library and 1.9 miles away from the post office. The expression (2.3m -1.9m) shows how many miles the library is closer to the school than it is to the post office. Which expression also shows how many miles the library is closer to the school than to the post office?

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

Find the cosine function that is represented in the graph.

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.