Предмет: Математика, автор: fevlik11

от двух станций одновременно отошли два поезда в противоположных направлениях. Первый поезд двигался со скоростью 82 км/ч, а второй поезд со скоростью 90 км/ч. Какое расстояние будет между ними через 3 часа?

Ответы

Автор ответа: zinovicgrigorij

Ответ: 516км

Пошаговое объяснение:

1. Находим скорость удаления поездов:

V=V1+V2=82+90=172км/ч

2. Находим расстояние между поездами через 3 часа:

S=V*t=172*3=516км.

fevlik11: а можно решение?

fevlik11: спасибо

Предыдущий вопрос

Следующий вопрос

Интересные вопросы

Предмет: Английский язык, автор: Киса2003

Помогите пожалуйста
1. Choose the correct variant.

I. …Smiths have a dog and a cat.
a) … b) The c) A
2. He knows how to work on … computer.
a) a b) an c) …
3. She was the first woman to swim across … English Channel.
a) a b) … c) the
4. Go down … Kingston Street and turn left into Oxford Street.
a) the b) a c) …
5. I don’t like milk in … tea.
a) … b) the с) а
6. At the end of… busy day, sleep is the best way to restore your energy.
a) the b) a c) …
7. We’ll go for a walk if … weather is fine.
a) a b) … c) the
8. Could you give me … information I asked for in my letter?
a) the b) … c) a
9. …war is a terrible thing.
a) The b) … с) А
10. I spent … very interesting holiday in England.
a) the b) a c) …

2. Fill in the correct article.

1. “Is this your ... friend?” — “No, it isn’t my ... friend, it is my sister”.
2. I have ... sister. My ... sister is ... teacher. My sister’s ... husband is ... pilot.
3. I have no ... car.
4. She has got ... terrible … headache.
5. They have ... dog and two ... cats.
6. My ... cousin says he is going to be ... manager one ... day.
7. Would you like ... apple?
8. This is ... tree. ... tree is green.
9. I can see three ... children. ... children are playing in … yard.
10. I have ... car. ... car is white. My ... friend has no ... car.

3. Раскройте скобки, употребляя глаголы в Past Simple или Past Perfect.

1. When I (to come) home, mother already (to cook) dinner. 2. When father (to return) from work, we already (to do) our homework. 3. When the teacher (to enter) the classroom, the pupils already (to open) their books. 4. Kate (to give) me the book which she (to buy) the day before. 5. Nick (to show) the teacher the picture which he (to draw). 6. The boy (to give) the goats the grass which he (to bring) from the field. 7. Mother (to see) that Nick (not to wash) his hands. 8. The teacher (to understand) that Lena (not to do) her homework. 9. I (to know) that my friend (not yet to come). 10. Tom (to return) from the cinema at five o'clock. 11. Tom (to return) from the cinema by five o'clock. 12. I (to finish) my homework at seven o'clock. 13. I (to finish) my homework by seven o'clock. 14. He (to think) that he (to lose) the money. 15. Ann (to tell) me that she (to see) an interesting film. 16. When I (to wake) up yesterday, father already (to go) to work. 17. Nick (to think) that his father (not yet to come) home. 18. Mary (to tell) us that she (to cook) a good dinner. 19. Yesterday I (to find) the book which I (to lose) in summer. 20. When we (to come) to the station, the train already (to leave)

2 года назад

Предмет: Українська мова, автор: Аноним

скласти діалог з вставними словами і звертаннями

2 года назад

Предмет: Английский язык, автор: rimmma

Помогите с упражнение плиз

2 года назад

Предмет: Русский язык, автор: Sicecile

помогитееееее пжжждж зарание спс

8 лет назад

Предмет: Химия, автор: mariysemen

В чём суть атомно-молекулярной теории? Каково её значение?

8 лет назад