Предмет: Математика, автор: chudesanna2000

Поезд ехал 4 ч со скоростью 64 км/ч и 5 ч со скоростью 53,2 км/ч.
Найдите среднюю скорость поезда на протяжении всего пути.

Ответы

Автор ответа: artemiitarasev

3

Ответ:

58 км/ч

Пошаговое объяснение:

Vср = $\frac{S}{t} =\frac{v1*t1 + v2*t2}{t1 + t2} = \frac{64 * 4 + 53,2 * 5}{4 + 5} = \frac{522}{9} = 58$

artemiitarasev: не забудь оценить ответ как лучший)

vikavskarinavikavska: Ответ

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