решите неравенство: x^2-1 меньше либо равно 0 - №19986358

решите неравенство: x^2-1 меньше либо равно 0
- Предмет:
  Алгебра
- Автор:
  bullet5cja
- 6 лет назад

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можно ли первые 10 чисел натурального ряда представить с помощью только 4-х цифр 4,используя знаки арифметических действий и скобки?
- Предмет:
  Математика
- Автор:
  cumulus7mwm
- 6 лет назад
- Ответов:
  
  1
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Древний Египет расположен в ______________________ части Африки.
С севера Древний Египет омывается _________________________ морем.
С востока - ____________________ морем.
Через территорию Древнего Египта протекает самая полноводная река в мире -________________.
В период с ___________ по _____________ она разливается, принося с собой частички чёрного плодородного ____________.
За это египтяне называли свою страну «______________________».
А самым известным растением Древнего Египта является тростник ________________.
Среди животных Египта можно встретить_____________________________________________.
Растительный мир представлен__________________________________________.
Таким образом, природные условия Древнего Египта благоприятствовали
занятию___________, но требовали слаженных усилий всего населения
для орошения полей.
- Предмет:
  История
- Автор:
  ponchodavid
- 6 лет назад
- Ответов:
  
  1
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в сочетании беречь как зеницу ока выделенное слово является устаревшим заимстованным диалектным професиональным
- Предмет:
  Русский язык
- Автор:
  marinmercer
- 6 лет назад
- Ответов:
  
  1
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3.Переведите следующие предложения. Подчеркните герундий.

1. This city is really worth visiting.

2. This city is really worth visiting.

3. Some people can work the whole day without feeling tired.

4. I had no hope of getting the answer before the end of the month.

5. I,m looking forward to going to New-York.

4. Переведите предложения. Подчеркните инфинитив.

1. The children were delighted to be brought to the circus.

2. I am glad to see you.

3. Sorry not to have noticed you.

4. He was the first to come.

5. To play chess was his greatest pleasure.

5. WHO DISCOVERED ELECTRICITY?
The story of the discovery of electricity is connected with the name of Thales, the Greek philosopher. The story goes that one day Thales rubbed a piece of amber against his sleeve and found to his great surprise that it attracted small bits of dried leaves. After further experimenting he concluded that this attractive force was a property that amber alone possessed. He called this characteristic "electricity" because the Greek word for amber was electron.
Thales' great discovery remained a curiosity for more than two thousand years. Then many other substances were found to have this curious property of electricity too. Naturally the people of the past had no idea of what electricity was. They thought of it as "rays" or "stream" that passed from the rubbed material. There were scientists who thought electric¬ity to be a sort of "fluid" that flowed through wires as water flows through pipes. Later many of them found out that elec¬tricity was made of tiny particles of some kind. In this way they tried to separate electricity into individual particles. There were some attempts to weigh a single particle of elec¬tricity and calculate its electric charge. This was one of the most delicate weighing jobs ever done by a man, for a single electric particle weighs only about half a millionth of a mil¬lionth of a millionth of a millionth of a millionth of a pound. To make up a pound, it would take more of those particles than there are drops of water in the Atlantic Ocean. Now we know these electric particles to be electrons.
When a large number of electrons break away from their atoms and move through the wire, we describe this action by saying that electricity is flowing through the wire and the electrical "fluid" that scientists of the past talked about is nothing else than electrons flowing along a wire. A lot of scientists worked in the field of electricity doing their best to make the life of people good and happy.
- Предмет:
  Английский язык
- Автор:
  patrick87
- 6 лет назад
- Ответов:
  
  1
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