An english instructor asserted that students' test grades are directly proportional to the amount of time spent studying. lisa studies 6hr for a particular test and gets a score of 73. at this rate, how many hours would she have had to study to get a score of 91?

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.

In each diagram, line p is parallel to line f, and line t intersects lines p and f. based on the diagram, what is the value of x? ( provide explanation)

Order 1100000, 314000, 965000, 1890000, from least to greatest.