Предмет: Математика, автор: Аноним

скорость лодки по течению реки больше скорости лодки против течения реки на 6 км/ч. какова скорость течения реки7

Ответы

Автор ответа: Milena519

0

пусть Х - скорость течение реки, а У- скорость лодки в стоячей воде.
лодка поплывет по течению Х+У
а против течения У - Х
составим уравнение (Х+У) - (У - Х) = 6
откроем скобки Х +У - У + Х =6
сократим +у и -У
получим Х + Х =6
или 2Х =6
Х=3 км/час

Автор ответа: mirzoyev

0

по теч7-6=1 км/ч

Автор ответа: mirzoyev

0

если хочешь найти по теч значит так минус

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