Mathematics, 03.01.2020 04:31 MrRandomUser

Before being put out of service, the supersonic jet concorde made a trip averaging 120 mi/h less than the speed of sound for 0.1 h and 410 mi/h more than the speed of sound for 3.0 h. if the trip covered 3,990 mi, what is the speed of sound?

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Before being put out of service, the supersonic jet concorde made a trip averaging 120 mi/h less tha...