The table in the image shows the number of students who participated in "Dress up Wednesday" for the past four weeks. On which date did 20% of the students participate?
a) Jan 5
b) Jan 12
c) Jan 19
d) Jan 26​

For the equations below which statement is true ?

Someone answer asap for ! 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.

Which expression do you get when you eliminate the negative exponents of 4a^2 b^216a^-3 b