Решите уравнение 3(2y – 50) – 2(30 – 2y) = 0 - Знания.site

Решите уравнение 3(2y – 50) – 2(30 – 2y) = 0
- Предмет:
  Математика
- Автор:
  connor
- 5 лет назад

Ответы 1

Ответ:
21
Пошаговое объяснение:
3(2y – 50) – 2(30 – 2y) = 0
6y-150-60+4y=0
10y-210=0
10y=210
y=210:10
y=21
- Автор:
  gillespie
- 5 лет назад
- 0
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Choose the most correct grammatical or lexical structure from the 4 choices given for each question or statement. (Предложения перепишите полностью)

1. She studies English __________ a Language Link school.
a) at
b) though
c) for

2. I didn't __________ like cabbage but now I do.
a) used to
b) use
c) use to

3. If you __________ he was leaving, why didn't you tell me?
a) had known
b) knew
c) have known

4. Don't worry! It was so long ago I'm sure he won't remember __________ you to do it.
a) to have asked
b) to ask
с) having asked

5. I asked a lot of people how to get tickets for the Bolshoi Theatre, but __________ of them could help me.
a) none
b) not any
c) no one

6. He's so rude! There's __________ hope that he will ever make any friends while he's at college.
a) little
b) a little
c) a few

7. __________ the bad weather __________ caused us the biggest problem.
a) It was/what
b) It was/that
c) This was/what

8. People usually liked her for her __________ personality.
a) calm and quite
b) quite and calm
c) quiet and calm

9. __________ that you tell us everything, you won't be sent to prison.
a) If
b) Provided
c) If only
10. Oh no! She looks so angry! She __________ heard what you said about her.
a) must have
b) must
c) can have
11. I __________ to work when the accident happened.
a) was driven
b) was being drove
с) was driving

12. Take your umbrella __________ it rains.
a) in case
b) for the case
c) since

13. He doesn't take __________ his father at all.
a) after
b) over
c) up

14. A burglar broke __________ my house last night.
a) out of
b) into
c) out

15. There is too __________ violence on television these days.
a) many
b) huge amount of
с) much
16. __________ people think that I am mad.
a) the most of
b) most
c) most of
17. Sorry, I can't give you my homework. I tried __________ it but it was too difficult.
a) do
b) to do
c) doing

18. I __________ by a famous hairdresser yesterday.
a) have cut my hair
b) had my hair cut
c) cut my hair

19. We didn't know about the murder until the next day because when it happened we _______ the party.
a) have left
b) had already left
c) left
20. You look hot! What __________?
a) have you done
b) did you do
с) have you been doing
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