Solve the system of linear equations by substitution check your solution show work y-x=23 y=3x+11 a) 3 ,20 b)6,29 c)24,47 d)4,27 2 x-y=30 2.5 +y=5 a)8,-22 b) 122.5, 92.5 c) 10 , -20 d)11, -22.5

The means and mean absolute deviations of the individual times of members on two 4x400-meter relay track teams are shown in the table below. means and mean absolute deviations of individual times of members of 4x400-meter relay track teams team a team b mean 59.32 s 59.1 s mean absolute deviation 1.5 s 245 what percent of team b's mean absolute deviation is the difference in the means? 9% 15% 25% 65%