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Известно, что три положительных числа относятя друг к другу как 5 : 2 : 4 . Размах ряда из этих чисел равен 3 . Найдите меридиану этого ряда.
Ответы 1
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5-2=3 размах в частях3:3=1 одна часть1*5=5 первое число1*2=2 второе1*4=4 третье5 2 4 - рядмедиана =2
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Автор:
hope51 - 5 лет назад
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Упражнение 209
Раскройте скобки, употребляя глаголы в Past Simple или Past Continuous.
1. The girl (to cook) dinner when the lights (to go) out. She (to burn) herself. 2. The boy (to hurt) himself while he (to skate). 3. When the woman (to enter) the room, the children (to feed) the goldfish. 4. When I (to visit) my friends in Denmark, I (to buy) two presents for my family. 5. When it (to start) to rain, we (to bathe) in the river. 6. Yesterday at one o'clock I (to have) lunch at the canteen. 7. When he (to come) in, I (to do) my exercises. 8. What you (to do) at eight o'clock yesterday? 9. At this time yesterday I (to go) home. 10. You (to sleep) when I (to go) out. 11. He (to read) on the sofa when I (to come) in and (to sit) down beside him. 12. I (to walk) along the street with my friend when a tram (to pass). 13. She (to look) out of the window when I (to see) her. 14. We (to answer) the teacher's questions when the headmistress (to enter) the classroom. 15. They (to drink) tea when I (to come) home. 16. He (to walk) along the river when a boat (to pass). 17. The old man (to think) about his plan when he (to fall) asleep. 18. We (to listen) to an interesting lecture yesterday. 19. When I (to enter) the classroom, the teacher (to write) words on the blackboard and the pupils (to copy) them into their exercise books. 20. They (to get) ready to go out when it (to begin) raining.
Упражнение 210
Раскройте скобки, употребляя глаголы в Past Simple или Past Continuous.
1. I (to go) to the theatre yesterday. 2. At seven o'clock yesterday I (to go) to the theatre. 3. What you (to do) at 5 o'clock yesterday? — I (to play) the piano. 4. When I (to come) to school, the children (to stand) near the classroom. 5. We (to play) in the yard the whole evening yesterday. 6. When I (to prepare) breakfast in the morning, I (to cut) my finger. 7. Last year I (to go) to the United States. 8. You (to go) to Great Britain last year? — No, I (to go) to France. 9. What you (to do) yesterday? — I (to translate) a very long article. 10. When I (to ring) up my friend, he (to sleep). 11. When grandfather (to watch) TV, he (to fall) asleep. 12. When my friend (to come) to see me, I (to do) my homework. 13. When I (to go) to the stadium, I (to meet) Kate and Ann. 14. When Nick (to ring) me up yesterday, I (to help) mother. 15. When the children (to walk) through the wood, they (to see) a fox. 16. When I (to come) home, my sister (to wash) the floor. 17. When Mike (to play) in the yard, he (to find) a ball. 18. When I (to draw) yesterday, I (to break) two pencils. 19. When I (to meet) Tom, he (to go) to the shop. 20. When I (to look) out of the window, the children (to play) hide-and-seek.-
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