The correlation coefficient r between the age of a homeowner, x, and the number of years remaining on the homeowner’s mortgage, y, is 0.485. What percent of the variation in the number of years remaining on a mortgage can be explained by differences in homeowners’ ages?

A. 51.5%
B. 23.5%
C. 97%
D. 48.5%

What is the simplified expression for 6(2(y+x))

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.

Michael is training for a marathon. in his first week he plans to run 8miles. what path should he take