Предмет: Математика, автор: nikto7983

Пж помогите зделаите только 3 пж вопрос на рисунке это ​

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Ответы

Автор ответа: sabirzelena
1

Ответ:  6  км/час.

Пошаговое объяснение:

Пусть собственная скорость катера будет х  км/час.

Путь.

2х+4(х-2)=3,5(х+2)

2х+4х-8=3,5х+7

2,5х=15

х=15/2,5=6 км/час - собственная скорость катера.

nikto7983: спасибо
Автор ответа: iramazurk
0

Ответ:

Пошаговое объяснение:

х = собственная скорость

х - 2 = против течения

х + 2 = по течению

2х + 4(х - 2) = 3,5(х + 2)

2х + 4х - 8 = 3,5х + 7

6х - 8 = 3,5х + 7

6х - 3,5х = 7 + 8

2,5х = 15

х = 15 : 2,5

х = 6

Ответ: 6 км/ч

hopkinsbaka: Здравствуйте, помогите пожалуйста с вопросом по алгебре.
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