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найдите ординату точки пересечения графиков функций y=-x+10 и y=4x
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Предмет:
Математика -
Автор:
jeremíaswilliamson - 5 лет назад
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Ответы 1
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Приравняй правые части функций:-x+10=4x-x-4x=-10-5x=-10 | *(-1)5x=10x=10/5x=2 - это абсцисса точки пересеченияТеперь надо подставить в любую функцию абсциссу точки пересечения, для того чтобы найти ординату:y=4*2y=8Ответ:8
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Автор:
tobie - 5 лет назад
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Past Continuous. Exercises. Прошедшее длительное время. Упражнения
Упражнение 1. Раскройте скобки, поставив глаголы в фоpму Past Continuous.
1. While I ___________ (to copy) the exercise, my friends __________ (to describe) a picture.
2. When we came in, the children __________ (to clean) their desks.
3. We met her at the bus stop. She ___________ (to wait) for the bus.
4. Some of the children ________ (to ski) while other children ___________ (to skate). Everybody __________ (to have) a lot of fun.
5. When we came the family ________ (to get) everything ready for Christmas. Bob and Helen _________ (to decorate) the Christmas tree.
6. The girls _________ (to feed) the birds in the garden while the boys _______ (to make) a bird-house.
Упражнение 2. Допишите предложения по содержанию текста предыдущего упражнения, используя глаголы в Past Continuous.
1. When someone broke the window Dad _________________
2. When Mum heard the crash she ___________________
3. The cousins didn’t hear the noise because they ____________________
4. The dogs when the noise woke them up. ______________
5. At 7.30 Nick ________________
Упражнение 3. Вставьте подходящие по смыслу глаголы в форме Past Continuous.
play swim feed sleep laugh
Yesterday we went to the zoo and saw there a lot of animals. First we went to see the white bears. They __________. Then we went to the cage with monkeys. There were a lot of children in front of the cage. They ___________ because a monkey in the the cage ____________. After that we went to see the elephant. There was a man there. He ____________the elephant. But we ___________ see much of the lions. They _______________.
Упражнение 4. Из имеющихся слов составьте вопросы к готовым ответам. Все вопросы должны быть в Past Continuous.
1. Where | the white bears | swimming | were ?
- In the swimming pool.
2. It | was | raining ?
- Oh, no. It wasn’t. The sun was shining brightly.
3. The elephant | what | eating | was ?
- Some grass and fruit.
4. What | was | playing with | the monkey ?
— With a small ball.
5. Were | how many lions | sleeping in the cage?
— Both of them.
Упражнение 5. Дополните вопросы и ответы глаголами в Past Continous.
— Mr. Rambler , what _______ you ______ (do) at 6.30 ?
— Oh, I ____________ (read) at that time in my room.
— Were you? _____________ you really ___________ (read)? What __________ you ________ (read) at that time?
— A book.
— Did your friends see you then?
— No, they didn’t. They _______________ (watch TV).
— What ________ they ____________ (watch)?
— Some film. But why?
— Some people saw a man who ___________ (try) to kill an elephant at that time. We think it was you.
Упражнение 6. Составьте вопросы в Past Continuous. Используйте вопросительные слова в скобках.
1. Were you watching TV at 11 o’clock last night? (when)
2. We were speaking about books at the lesson. (what, where)
3. After school they were practising a new game. (alternative)
4. When I came, Nick was cleaning his room, (what)
5. He was returning to his camp with a pail of water. (where?)-
Предмет:
Английский язык -
Автор:
gianaoneill - 5 лет назад
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Ответов:
2 -
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