Chủ tịch Hồ Chí Minh đã nhận xét lịch sử Đảng Cộng sản Việt nam "là cả môt pho lịch sử bằng vàng". Anh (chị) hãy phân tích vai trò lãnh đạo của Đảng trong sự nghiệp giải phóng dân tộc giai đoạn 1930-1945?

52(4p+1) ≤ 4 3+12p can someone solve it for me with explanation

Earth's atmosphere is unique among the planets and is able to support life because it contains a large amount of a) oxygen b) helium c) methane d) carbon dioxide

17 a tourist was planning a trip by car for travelling at some constant speed for 2.5 hours. however, he found that if he increases the speed by 20 km/h he can cover the same distance in 30 minutes less time than it was planned. what was the planned speed of the tourist, in km/h?