Find the mean or average of the list of numbers.
5, -6, 2, 7, 0, -9, 20, 8

Which facts are true for the graph of the function below? check all that apply. f(x) = log8 x. (30 points pls )

Asimple random sample of size nequals14 is drawn from a population that is normally distributed. the sample mean is found to be x overbar equals 70 and the sample standard deviation is found to be sequals13. construct a 90% confidence interval about the population mean

The base of a triangle exceeds the height by 7 centimeters. if the area is 400 square centimeters, find the length of the base and the height of the triangle.