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Вопрос по математике:
Посмотри зимним утром в окно. Здесь в перевалочку разгуливают вороны и гуляют собаки. У них всего 5 голов и ног 14. Сколько-
Автор:
beaux
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Решение задачи:Данную задачу решим при помощи уравнения с одним неизвестным.1. Во дворе гуляют х ворон.2. Во дворе гуляют (5 - х) собак.3. Сколько лап у ворон?2 * х = 2х лап.4. Сколько лап у собак?4 * (5 - х) = (20 - 4х) лап.5. Составим и решим уравнение.2х + (20 - 4х) = 14;2х + 20 - 4х = 14;20 - 14 = 4х - 2х;6 = 2х;х = 6 / 2;х = 3;Ответ: Во дворе гуляют х = 3 вороны. Во дворе гуляют 5 - х = 5 - 3 = 2 собаки.
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Вопрос по другим предметам:
Замените словосочетание «бессонных ночей» построенное на основе согласования, синонимичным словосочетанием со связью-
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Вопрос по английскому языку:
ДОБРЫЙ ДЕНЬ! ПОМОГИТЕ, ОЧЕНЬ СРОЧНО НУЖНО!!!!
Первые 4 упражнения сделала сама, только проверить (кроме п. 7 в 4 упражнении), а с 5 помогите полностью. Ну если где ошибки, то исправьте
Упражнение № 1. Измените предложения по образцу. Используйте nothing/nobody.
1. There isn’t anything in this box. - There is nothing in this box.
2. There wasn’t anybody in the gym. - There is nobody in the gym.
3. There isn’t anything on TV tonight. - There is nothing on TV tonight.
4. We didn’t do anything. - We did nothing.
5. I haven’t got anything to do. - I have got nothing to do.
Упражнение № 2. Закончите предложения. Используйте anybody/anything.
1. I've got nothing to eat. I haven't got anything.
2. There's nobody in the changing – room. There isn't anybody.
3. I can see nothing on the desk. I can't see anything.
4. There was nobody on the plane. There wasn't anybody.
5. He asked nobody to help him. He didn't ask anybody.
Упражнение № 3. Ответьте на вопросы. Используйте nobody/nothing.
1. Has anybody in this group got a dictionary? - Nobody.
2. Is there anybody here who knows French? - Nobody.
3. Who knows the answer? - Nobody.
4. What did you buy? – Nothing.
5. What happened? – Nothing.
6. Who was late? – Nobody.
Упражнение № 4. Заполните пропуски в предложениях. Используйте nobody/ nothing / anybody / anything.
1. Did he say anything about it? – No, he said nothing.
2. What shall I do now? The training session is over. You can do anything you like.
3. There was nobody in the street because it was very late.
4. Nobody wants to see him.
5. Can anybody tell me how to get to the nearest underground?
6. Blind people can't see anything, they can see nothing.
7. Do you know about his problems? __ knows.
8. Did you meet anybody on your way to the gym?
9. There was nothing on the table.
10. He has nobody to help him. He hasn't got anybody to help him.
Упражнение № 5. Заполните пропуски в предложениях. Используйте somebody/ nothing / anywhere / somewhere / и т.д.
1. I put my bag __ ten minutes ago, and now I can't find it.
2. There is __ in the gym. Do you know him?
3. What's her address? I know __ about it. She lives __ in Moscow.
4. Did you do it yourself? Yes. I did __ helped me.
5. I see __ I know on the sports ground
6. Do you know __ at that sports club? I'm afraid that I don't know __.
7. There are many bridges in St Petersburg. They are __ in the city.
8. You can find the sports centre easily __ will help you.
9. What's in this box? ___ It's empty.
10. Is there __ in the gym? ___ You can lock the door.
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