Jillean is training for a marathon. They have to run at least 100 miles each week. Jillean has run 35 miles so far this week. If they run 20 miles each day. how many more days do they have to run to exceed their goal? Write an inequality and solve it.

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}

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.

Afrequency table of grades has five classes (a, b, c, d, f) with frequencies of 3, 13, 14, 5, and 3 respectively. using percentages, what are the relative frequencies of the five classes?