Предмет: Математика, автор: Высокий

0,7(3m+2n)-1.1n, если 7m+n=4.7

Ответы

Автор ответа: Anetos

2,1m+1.4n-1.1n=2.1m+0.3n=(разделим на 0,3)=7m+n

0,7(3m+2n)-1.1n=4.7

Автор ответа: Тига

0.7(3m+2n)-1.1n=2.1m+1.4n-1.1n=2.1m+0.3n=0.3(7m+n)
Если 7m+n=4.7, то 0.3*4.7=1.41
Ответ: 1.41

удачи)

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Английский язык, автор: ingrid77

Помогите пожалуйста.Срочно!
Вставьте артикль (a, an, the) только где необходимо:
An Article
V-1
Fill in the gaps with the proper article (a, an, the):
1. This is … pen. It is her … pen.
2. I got … letter from my … friend … letter was short.
3. This is … milk. … milk is not fresh.
4. I have two … brothers. They are at … work.
5. Where is … pen? - … pen is on the desk.
6. There is … little white kitten on … sofa.
7. There is no … bread on … plate.
8. Who is sitting in … front of you?
9. In … afternoon it was warm.
10. What do you do when you come … home from … school?
11. In … August I’ll go to … Europe.
12. On … Sunday my sister does not go to … school.
13. What do you do after … breakfast?
14. Do you like to watch … TV in … evening?
15. What … colour is your hat?
16. Ann plays … piano in … morning.
17. He can speak … French.
18. … boys like to play … football and … tennis.
19. The boy said in … this voice: “You are my friend”.
20. Everest is … highest mountain.
21. The coasts of … England are washed by … North Sea, … Irish Sea, … English Channel, … Strait of Dover.
22. … lake Baikal, … lake Ladoga and lake Onega are … largest lakes in … Russia.
23. … Altai Mountains are higher than … Urals.
24. Look at the clock! It is … half past ten.
25. What … nice dress!
26. We shall go to … France in … day by … bus.
27. What … shame.
An Article
V-II
Fill in the gaps with the proper article (a, an, the):
1. This … dress is new, and that … dress is old.
2. Ann has got … car. … car is expensive.
3. He bought … sandwich. … sandwich was tasty.
4. Her children are at … school.
5. … Moon is smaller than … Sun.
6. There is … sofa in … corner of … room.
7. There is … computer in front of the bed.
8. I see … picture on … desk.
9. Ann went to … bed and slept very well at … night.
10. In … March I have my birthday.
11. On … Saturday I’ll go to the cinema.
12. My father always comes from … work late.
13. What did you have for … lunch?
14. What … colour is your new dress?
15. I often play … chess with my … father.
16. Does he like to play … guitar?
17. She spoke in … trembling voice.
18. …. Australia is located in the South of … Asia.
19. … Australia is … flattest of the continents.
20. The chief rivers of … Great Britain are: … Thames, … Avon, … Severn.
21. … USA is washed by … Atlantic Ocean in … east.
22. Look at the clock! It is … quarter past ten.
23. I was at … cinema yesterday.
24. What … wide river!
25. Let’s go to the sea by … car.
26. What … pity!
27. Her birthday will be in … week.

7 лет назад

Предмет: Физика, автор: annasolomennikova4

Почему если кристаллик иода положить на ладошку, то он через минуту "исчезнит"?

7 лет назад

Предмет: Английский язык, автор: Аноним

Пожалуйста помогите хотя бы с частью даю 80 баллов

7 лет назад

Предмет: Математика, автор: mvv2003

помогите решить примеры плиз: 75 м2:25-30м2:15-100см2; 18дм2умножить на 2-5дм2 умножить на 7.срочно надо

10 лет назад

Предмет: Математика, автор: dimasik9

на сколько 36 больше чем 4, 6, 9

10 лет назад