A lamina occupies the region inside the circle x2 + y2 = 14y but outside the circle x2 + y2 = 49. Find the center of mass if the density at any point is inversely proportional to its distance from the origin.

Which of these statements is the most accurate description of olmec culture? a.) they destroy the aztecs. b.) it was located in the andes mountains. c.) it contained the first complex civilization in mesoamerica. d.) they had a sophisticated written language that was destroyed by europeans.