Solve the linear system using elimination 4x-y=5 4x+4y=-4 show work

Julia measured the high temperature in her town for one week. using the chart above, find the mean absolute deviation for the high temperatures. round your answer to the nearest tenth. be sure to show your work for finding: the mean of the set of data the distance of each number from the mean the mean absolute deviation

The estimated number of people to attend the last bengals game of the season was 2000. the actual number of fans attending was 1200. by what percent did the estimate differ from the actual?

Solve each equation using the quadratic formula. find the exact solutions. 6n^2 + 4n - 11