Предмет: Математика, автор: Shtormant

Собственная скорость лодки 12,6 км/ч,

Скорость реки 1,1 км/ч.

Какое расстояние проплывет лодка за 2,5ч против течения?

Ответы

Автор ответа: Аноним
3
(12,6-1,1)*2,5=28,75 километров
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Раскройте скобки и напишите перевод каждого предложения
Упражнение 1. Раскройте скобки, употребляя глаголы в Past Simple или Past Perfect.
1. By two o’clock the teacher (to examine) all the students.
2. On my way to school I (to remember) that I (to leave) my report at home.
3. All my friends (to be) glad to hear that I (to pass) all the exams successfully.
4. The poor boy (to open) his eyes, (to look) around and (to try) to remember what (to happen) to him.
5. All the passengers (to see) at once that the old man (to travel) a lot in his life.
6. By the time we (to come) to see him, he (to leave) home.
7. During the holidays my friend (to visit) the village where he (to live) in his childhood.
8. When they (to enter) the hall, the performance already (to begin).
9. When I (to come) home, my mother (to go) shopping.
10. He (to study) French before he (to enter) the university.
I (to think) he already (to go) home.
2. I (not to see) him after we (to meet )at the concert.
3. He (to leave) the house before I (to have ) time to ask him anything.
4. After he (to spend) some days in Paris he (to feel) lonely and (to want) to return home.
5. He (to speak) a language we never (to hear) before.
6. When the rain (to stop), I (to look ) out of the window.
7. The telegram (to come) some minutes after he (to leave).
8. She (to think) that Tom and Lanny (to quarrel).
9. The girl (to be) glad that she (to find) a seat near the window.
10. He (to remember) that he (not to ring) her up in the morning.
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Упражнение 3. Раскройте скобки, употребляя глаголы в Past Simple, Past Continuous и Past Perfect.
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2. By six o’clock father (to come) home and at six he (to have) dinner.
3. By nine o’clock yesterday grandmother (to wash) the dishes and at nine she (to watch) TV.
4. When I (to meet) Tom, he (to eat) an ice-cream which he (to buy) at the corner of the street.
5. When father (to come) home, we (to cook) the mushrooms which we (to gather) in the wood.
6. When I (to see) Ann, she (to look) at the flowers which she (to pick) in the field.
7. When I (to come) home yesterday, I (to see) that my little brother (to break) my pen and (to play) with its pieces.
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3. She (to say) that he (to give) her the wrong address.
5. I (to ask) him where he (to put) my hat.
6. He (to tell) us that they (to spend) all the money.
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8. She (to come) to see us just at the time when we (to have) dinner. It (to be) the first time I (to see) her.
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11. I (to find) the old man in the garden. He (to talk) to some children who (to stand) around listening to him.
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