Cho A = {1,3,3,3,5,5,5,5,5} và B = {1,3,5}.Đáp án nào dưới đây mô tả chính xác nhất mối quan hệ giữa A và B:

Which of the following questions is a statistical question? (2 points) how many professional sport leagues are there? where do the professional sport leagues play? how many hours of professional training took place over the weekend? how many hours do you spend each week training for a sports league?

Find the vertex of the function given below y=x^2-6x+1

Which one is true about the hexagons ?