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игральную кость бросают трижды. Какова вероятность того, что три раза выпадет чётное число очков
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Предмет:
Математика -
Автор:
misterkhoq - 6 лет назад
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Ответы 1
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Вероятность того, что чётное число очков выпадет на одном кубике 3/6=0,5. Следовательно на трёх кубиках 0,5*0,5*0,5=0,125Ответ: 0,125
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Автор:
laddiedjee - 6 лет назад
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The Discovery of America
Christopher Columbus discovered America in 1492. He was born in Italy. His father and both grandfathers were cloth makers. Columbus was a seaman and made many sea voyages.
Most people in Columbus ‘s days thought that the earth was flat and they did not believe that beyond the Atlantic Ocean lay India.
In 1492 the King and the Queen of Spain gave Columbus money to go to India. He decided to sail west as he was sure that our planet was round. There were 3 caravels: the Santa Maria, the Nina and the Pinta. After sailing 4,000 miles he reached some land. The crew saw something like a white cliff and cried out: “Tierra! Tierra!” Columbus thought that it must be India but it was not. It was a new land – a new continent. It was America. Columbus named the land they reached San Salvador (“Holy Savior”). People began to speak about the land as “The New World”.
European people came to the New World for many reasons. Some hoped to find gold and silver. Priests and missionaries came to bring to Christian religion to the Indians. Among those who came for freedom was a small group of English people called Pilgrims. They wanted to start a new life and to have no religious problems they had in English. In 1620 on the ship “Mayflower” they landed in the northeast of America. They set up a colony and called that part of the country “New England”.
I. Write if the following information is true (T) or false (F):
1. The USA was discovered by Christopher Columbus in 1492.
2. Columbus was a cloth maker.
3. Most people in Columbus’s days believed that beyond the Atlantic Ocean lay India.
4. Columbus sailed 4,000 miles to reach a new land.
5. All European people came to the New World to find gold and silver.
6. The first English settlers in America called Pilgrims set up a colony.
II. Answer the following questions in Russian:
1. Who discovered America?
2. The King and the Queen of what country gave Columbus money for voyage?
3. How many caravels were there?
4. How did Columbus name the land he had reached?
5. What reasons did European people come to the New World for?
6. How did the Pilgrims reach America?-
Предмет:
Английский язык -
Автор:
sable - 6 лет назад
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Ответов:
2 -
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Going in for Sports
At the end of the week Father usually gets good ideas. Last Saturday when he was looking through the newspaper he found an article about skiing. He read it and said: “I don't remember when we last went skiing. What about trying it tomorrow?”
Everybody liked the idea so we started our preparations immediately. All of us wanted to look smart. Jane took out her sports clothes. Mother sent me out to buy skiing caps. When I came back she was mending Father's old trousers. She got angry when she saw the caps as they were all the same colour.
Late at night our clothes were ready and we could go to bed.
At 10 o'clock in the morning I suddenly woke up. The women were still sleeping. “Wake up everybody,” I shouted. “Stop joking in a silly way,” Mother said from her bedroom. “What about skiing?” I asked Father who was coming out of the bathroom. He paid no attention to my words. At breakfast he was reading his morning newspaper as usual and suddenly exclaimed: “Look, they say, swimming is the best way of losing weight. What about trying it?”
I. Answer the questions.
1. Where did the father get his idea of skiing from?
1) a newspaper article
2) a television programme
3) a sports review
4) a radio report
2. Why did the family start their preparations immediately?
1) They were a sporty sort of people.
2) They wanted to look smart.
3) They liked the idea of skiing.
4) They didn't want to waste time.
3. What happened in the morning?
1) The family went skiing.
2) The family went swimming.
3) The family was ready for skiing.
4) The family wasn’t going to ski.
4. What did the father say to the boy's question about skiing?
1) He asked him to stop joking.
2) I le didn't say anything.
3) He told the so that he didn’t like the idea of skiing.
4) He answered that they would go skiing next Saturday.
II. Find the sentence with the verb in the Past Continuous.
1) I don't remember when we last went skiing.
2) “Stop joking in a silly way,” Mother said from her bedroom.
3) At breakfast lie was reading his morning newspaper as usual.
4) Swimming is the best way of losing weight.
III. To ‘mend’ trousers means:
1) to clean
2) to wash
3) to press
4) to repair
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Предмет:
Английский язык -
Автор:
leonard38 - 6 лет назад
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Ответов:
1 -
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Blind people can learn to type by feeling the keys but they can't find and correct a mistake. In order to help blind people use a computer Dr. Tom Vincent has made a system that reads aloud what has been typed.
He added a voice to a cheap microcomputer. "The computer is programmed to repeat each letter as it is typed and to read what is displayed on the computer screen - it can be a letter, a word or whole sentences. It is programmed to pronounce English words. If a word is not in its memory the computer spells it. Any mistakes can easily be corrected. When the text is complete, a printed copy can be made in the usual way.
The system has won a prize and is already in use, so blind students at a college in Wales can use computers. Dr. Vincent is now working at an optical sensor that can recognize printed words and read them aloud.
I. Choose the title to the text.
1) Dr. Vincent's help
2) Talking typewriter
3) Computers for Welsh students
4) Correction system
II. Complete the statements according to the text.
1. It is difficult for blind people to use a computer because ...
1) they can't spell English words.
2) they can't see and correct mistakes on the screen.
3) they can't learn to type.
4) they can't work with CD User Guide.
2. Dr. Tom Vincent has made a system that ...
1) easily corrects mistakes.
2) makes printed copies in the usual way.
3) reads aloud what is displayed on the computer screen.
4) can translate what has been typed into any foreign language.
3. Dr. Vincent is now developing a new optical system that ...
1) can recognize and read aloud printed words.
2) is programmed to repeat each letter as it is typed.
3) can be used at a college in Wales.
4) will win a prize.
III. Find the sentence with the verb in the Present Indefinite Passive.
1) It can be a letter, a word or whole sentences.
2) "The system has won a prize and is already in use.
3) It is programmed to pronounce English words.
4) If a word is not in the memory the computer spells it.
IV. Choose the correct form.
Some years ago blind students at a college in Wales ... use computers.
1) can
2) can't
3) could
4) couldn't-
Предмет:
Английский язык -
Автор:
norah - 6 лет назад
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Ответов:
1 -
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решите уравнение
2cos^2 x+sin2x = sin( x - 3pi/2) - cos( pi/2+x)-
Предмет:
Математика -
Автор:
jakeyemq - 6 лет назад
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Ответов:
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