Решите систему уравнений {3x-y=15 {x+6:2-y:3=6 - №6547378

Решите систему уравнений {3x-y=15
{x+6:2-y:3=6
- Предмет:
  Алгебра
- Автор:
  dutchespsl4
- 5 лет назад

Ответы 1

3X = Y + 15 ----------------3 * ( X + 6) - 2Y = 6 * 6 3X + 18 - 2Y = 36 Y + 15 + 18 - 2Y = 36 - Y = 36 - 33 Y = - 3 3X = - 3 + 153X = 12 X = 4 ------------Ответ X = 4 ; Y = - 3
- Автор:
  champqm28
- 5 лет назад
- 0
Добавить свой ответ

Еще вопросы

Осуществите цепочку превращений:Кальций-Оксид кальция-Гидроксид кальция-Нитрат кальция-Карбонат кальция-Оксид кальция
- Предмет:
  Химия
- Автор:
  bernard
- 5 лет назад
- Ответов:
  
  1
- Смотреть
Переведите письменно диалог.

Norman Baker and
Linda Johnson discuss how to ship their goods to Florida Soft.

Linda: Why not send those H 24 by air? Sending goods by air is faster than
sea.

Nor.: But isn’t it more expensive? We have to keep our prices low –
lower than our competitors.

Linda: Now, let’s look at the figures. It’ll make about 350 USD per tonne by
air to Lincoln
and only 60 USD per cubic metre by sea.

Nor.: Yeah, sending by air is almost six times as expensive as sending by sea.

Linda: But can’t you see? We’re speaking about different things.

These are tones and those are cubic metres. See what I’m driving at?

Nor.: No.

Linda: Hm…O.K. Say, you have a container with a volume of 3 cubic metres and
weighing 1 tonne. How much will it make to Lincoln-both by air a by sea?

Nor.: Let me see. So, we take three
times sixty which makes one hundred and eighty by sea and three hundred and
fifty by air.

Linda: That’s right. And if the container is 7 cubic metres and
one tonne, as we have in case with our H 24s?

Nor.: In this case we take seven times
sixty which makes four hundred… four hundred and it’s still fifty by air? O.K.,
so, we have four hundred and twenty-that’s by sea, twenty and by seventy
dollars less, if it’s by air… I bet, you’re right, Linda.

Linda: Yes. As a matter of fact, because of their volumes and weights some
goods are often sent more cheaply by air. Those are shoes, computers,
televisions, radios, refrigerators.

Nor.: And H 24s?

Linda: Of course!!!
- Предмет:
  Английский язык
- Автор:
  nikhilchung
- 5 лет назад
- Ответов:
  
  2
- Смотреть
пояснить понять вильний вирш
- Предмет:
  Українська література
- Автор:
  fritzrojas
- 5 лет назад
- Ответов:
  
  1
- Смотреть
морфемный разбор слова гостиница
- Предмет:
  Русский язык
- Автор:
  hayliecy0k
- 5 лет назад
- Ответов:
  
  1
- Смотреть

How much to ban the user?

1 hour 1 day 100 years