a. Mx=21625,My=43225M_x = \frac{216\sqrt{2}}{5}, M_y = \frac{432\sqrt{2}}{5}Mx=52162,My=54322 b. xˉ=185,yˉ=95\bar{x} = \frac{18}{5}, \bar{y} = \frac95xˉ=518,yˉ=59
