Предмет: Алгебра, автор: nikitalvov56

Помогите даю 30 баллов!!!! Алгебра​

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Ответы

Автор ответа: LedyKarina2004
1

Ответ:

Х-собственная скорость лодки

X-2-скорость лодки против течения

2км -скорость течения

Время -0,5 лодка + 1,5ч с плотом одновременно плыли

составим уравнение:

(х-2)• (0,5+1,5)+ 2•1,5=35

Решим уравнение:

(Х-2)•2+3=35

2Х-4+3=35

2Х-1=35

2Х=36

Х=18км/ч - ответ

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