Aprincipal asked local nurseries to each donate 3 trees to her school. the plan is to plant 10 trees in the student garden and the rest near the athletic fields. let n represent the number of nurseries that donate trees and t represent the number of trees that will be planted near the athletic fields.

Can someone me and do the problem plz so i can understand it more better

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.

Is a square always, sometimes, or never a parallelogram