Sept 10 (Reuters) - Wall Street’s main indexes opened higher on Friday as signs of an easing in tensions between the United States and China added to recent data that soothed fears of a slowdown in the economic recovery. The Dow Jones Industrial Average rose 70.21 points, or 0.20%, at the open to 34,949.59. The S&P 500 opened higher by 13.64 points, or 0.30%, at 4,506.92, while the Nasdaq Composite gained 84.66 points, or 0.56%, to 15,332.92 at the opening bell. (Reporting by Shreyashi Sanyal in Bengaluru; Editing by Aditya Soni) Our Standards: The Thomson Reuters Trust Principles.