In 1940 the average size of a U. S. farm was 174 acres. Let's say that the standard deviation was 53 acres. Suppose we randomly survey 43 farmers from 1940. Give the distribution of X

7x+8y=-18, 4x-9y=-3 solve the system of equations

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left

Moira has a canvas that is 8 inches by 10 inches. she wants to paint a line diagonally from the top left corner to the bottom right corner. approximately how long will the diagonal line be?