A thin triangular plate of uniform density and thickness has vertices at v = (1.1), V =(7.1), V3 = (3.7), as in the figure to the right, and the mass of the plate is 3 g. Complete parts a and b below. 10 an a. Find the (x,y)-coordinates of the center of mass of the plate. This "balance point of the plate coincides with the center of mass of a system consisting of three 1-gram point masses located at the vertices of the plate.