Ответ по предмету Физика: Помогите решить уравнение : 6х-8у*5-90(х-у)=453

Предмет: Химия, автор: lerraaaa65

(2) Составьте молекулярные формулы алкинов, в молекулах ко-
торых:
а) 4 атома углерода.
б) 6 атомов углерода.
в) 8 атомов водорода.

6 лет назад

Предмет: Математика, автор: mirzaevmirza2911

пожалуйста помогите пожалуйста срочно нужен срочно срочно

6 лет назад

Предмет: Английский язык, автор: ahizver18

ВЫБРАТЬ ГРАММАТИЧЕСКУЮ ФОРМУ, КОТОРАЯ ЯВЛЯЕТСЯ ПРАВИЛЬНОЙ:

1. She_________ here since 1990.
a. is c. had been
b. has been d. was
2. When does your brother get up? He________ up at 7 o’clock.
a. is getting c. will get
b. got d. gets
3. What time________it now? – I can’t tell you. I have no watch.
a. are c. has
b. is d. have
4. The students are in the lecture hall. They ________ an English test.
a. write c. were writing
b. are writing d. wrote
5. Where did Nick go yesterday? – He________ to the University.
a. has gone c. went
b. goes d. was going
6. If it________, we’ll go for a walk.
a. will not rain c. shall not rain
b. doesn’t rain d. didn’t rain
7. It’s an interesting book. Would you like to read it?- I________it already.
a. have read c. read
b. had read d. was reading
8. The first book________ in 1445 in Germany.
a. was printing c. are printing
b. was printed d. printed
9. They told us they________ our laboratory next month.
a. will visit c. are visiting
b. will be visiting d. would visit
10. She is the first-year student, so she________ a lot.
a. may read c. can read
b. has to read d. is able to read
11. What’s the matter with Ann? I_______ her since Monday.
a. didn’t see c. haven’t seen
b. hadn’t seen d. don’t see
12. Many new buildings________ in our town every year.
a. will be built c. were built
b. are built d. are building
13. The second edition of this dictionary________in a year.
a. will publish c. is published
b. has published d. will be published

14. How long_______ you________ English? – For six years.
a. have been studying c. are studying
b. had been studying d. were studying
15.What________ he_______ when you entered the room?
a. has been doing c. had been doing
b. was doing d. is doing
16. We enjoyed the film ________ on TV yesterday.
a. showed c. was shown
b. showing d. shown
17. The task is________ difficult than that one. I can do it without your help.
a. more c. less
b. most d. least
18. Ann didn’t know where________.
a. her money are c. her money was
b. is her money d. was her money
19. The woman________ to the rector is our teacher.
a. is speaking c. speaking
b. speaks d. spoke
20. You ________ go to the library. I’ll give you this book.
a. shouldn’t c. mustn’t
b. needn’t d. haven’t
21. Who________ the main role in this film?
a. does play c. plays
b. play d. is played
22. There isn’t________ ink in my pen.
a. some c. no
b. any d. few
23. I’d like to know what book_________ now.
a. you read c. you are reading
b. do you read d. are you reading
24. Do not go shopping. We have________ bread for supper.
a. few c. little
b. a few d. a little
25. I don’t like________ book you were speaking about.
a. no c. the
b. a d. some
26. She told us________ so nervous.
a. don’t to be c. we shouldn’t been
b. not to be d. not be

6 лет назад

Предмет: Биология, автор: Vizel

(химия, случайно закинул в биологию) рассмотрите электролиз расплава и раствора AgI

10 лет назад

Предмет: Математика, автор: DaryaFedotova21

В 5 спортивных залах 560 тренажеров В первом зале 3/8 всех тренажеров, во втором - в 7 раз меньше, в первом, а остальные тренажёры распределены поровну по оставшимся спортивным залам.Сколько тренажеров в каждом зале?

10 лет назад

Помогите решить уравнение : 6х-8у*5-90(х-у)=453

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