Предмет: Алгебра, автор: vsad06

Катер плыл сначала против течения реки 132 км, а потом вернулся назад, потратив на обратный путь на 5 часов меньше. Найдите скорость катера в стоячей воде, если скорость течения составляет 5 км/ч.


ДАЮ 45 БАЛЛОВ

Ответы

Автор ответа: miron2077
4

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1

Приложения:
Автор ответа: Аноним
1

Пусть скорость катера в стоячей воде х /км/ч/, тогда скорость против течения (х-5) /км/ч/, скорость по течению (х+5) /км/ч/

Согласно условия составим и решим уравнение.

132/(х-5)-132/(х+5)=5

х≠±5

132*(х+5-х+5)=(х²-25)*5

132*2=х²-25

х²=289

х=±17

По смыслу задачи не подходит -17

Скорость катера в стоячей воде равна 17 км/ч

Похожие вопросы
Предмет: Геометрия, автор: nastymi33
Предмет: Английский язык, автор: bb6840216
подскажите пожалуйста как читается

They say, "Oh my god, I see the way you shine Take your hands, my dear, and place them both in So they say, "Dance for me, dance for me, dance for me, oh-oh oh I've never seen anybody do the things you do mine You know you stopped me dead while I was passing by And now I beg to see you dance just one more time Ooh, I see you, see you, seen you every time And oh my I, I like your style You, you make me, make me, make me wanna cry And now I beg to see you dance just one more time" So they say, "Dance for me, dance for me, dance for me, oh-oh-oh I've never seen anybody do the things you do before" They say, "Move for me, move for me, move for me, eh-eh-eh And when you're done I'll make you do it all again" I said, "Oh my god, I see you walking by Take my hands, my dear, and look me in my eyes" Just like a monkey, I've been dancing my whole life But you just beg to see me dance just one more time "Ooh, I see you, see you, seen you every time And oh my I, I like your style You, you make me, make me, make me wanna cry And now I beg to see you dance just one more time" before" They say, "Move for me, move for me, move for me, eh-eh-eh And when you're done I'll make you do it all again" They say, "Dance for me, dance for me, dance for me, oh-oh oh I've never seen anybody do the things you do before" They say, "Move for me, move for me, move for me, eh-eh-eh And when you're done I'll make you do it all again" Ooh, ooh, ooh, ooh, ooh (Do it all again, do it all again, do it all again) Oh-oh, oh-oh, oh Ooh, ooh, ooh, ooh, ooh-ooh (Do it all again, do it all again, do it all again) Ooh, ah-ah, ah-ah They say, "Dance for me, dance for me, dance for me, oh-oh oh I've never seen anybody do the things you do before" They say, "Move for me, move for me, move for me, eh-eh-eh And when you're done I'll make you do it all again" They say, "Dance for me, dance for me, dance for me, oh-oh oh I've never seen anybody do the things you do before" They say, All again "Move for me, move for me, move for me, eh-eh-eh And when you're done I'll make you do it all​