Предмет: Математика, автор: Аноним

665. Автомобиль ехал по шоссе 2,1 ч. со скоростью 90 км/ч затем по проселочной дороге 3,8 часа со скоростью 40 км/ч. Найдите среднюю скорость автомобиля.

Приложения:

Ответы

Автор ответа: ChristmasIQ2
38

Ответ:

Пошаговое объяснение:

90х2.1+40х3.8=189+152=341км за 5.9часов

341:5.9=57.8 км/час ср.скорость

sahinaabduvahabova69: спс
sahinaabduvahabova69: дуб
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