Below is the distrubution for number of miles run in a week for a group of 20 runners. Find the mean number of miles run for this group. Use your calculator. Round your answer to the nearest tenth class boundaries frequency
5 - < 10 - 1
10 - < 15 - 2
15 - < 20 - 3
20 - < 25 - 5
25 - < 30 - 4
30 - < 35 - 3
35 - < 40 - 2

Complete the statements about the system of linear equation respresented by the tables the equation respented the left table is

Given the system of equations presented here: 2x + 4y = 14 4x + y = 20 which of the following actions creates an equivalent system such that, when combined with the other equation, one of the variables is eliminated? multiply the second equation by â’4 to get â’16x â’ 4y = â’80 multiply the second equation by â’1 to get â’4x â’ y = â’20 multiply the first equation by 2 to get 4x + 8y = 28 multiply the first equation by â’1 to get â’2x â’ 4y = â’14

Whit h equation best represents this situation the number 98 increased by an unknown number equal to 120