Вопрос школьника по предмету Математика
ПОМОГИТЕ РЕШИТЬ ЗАДАЧУ!!!СРОЧНО НАДО))0)СПАСИБО БОЛЬШОЕ…
Скорость лодки против течения реки 22 кмчас.Найдите скорость течения реки,если за 4 часа по озеру она прошла 108,8 км
Ответ учителя по предмету Математика
1) Vc = S :t = 108,8 км : 4 ч = 27,2 км/ч — собственная скорость
2) Vтеч = Vпротив — Vс = 27,2 — 22 = 5,2 км/ч — скорость течения — ОТВЕТ
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