9. a car has an average speed of 80 km/h for one hour, then an
average speed of 90.0 km/h for...
Mathematics, 09.10.2019 02:30 rdrboo
9. a car has an average speed of 80 km/h for one hour, then an
average speed of 90.0 km/h for two hours during a three-hour
trip. what was the average speed for the three hour trip?
Answers: 1
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