4x в квадрате +3у при х =-2,у=-9 решите пожалуйста - Знания.site

4x в квадрате +3у при х =-2,у=-9 решите пожалуйста
- Предмет:
  Алгебра
- Автор:
  buttercupkelley
- 5 лет назад

Ответы 1

Ответ:
4*(-2)²+3*(-9)=4*4-27=16-27=-11
- Автор:
  braydon835
- 5 лет назад
- 0
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1. There's no doubt that computers have______________ our lives easier.

(A) done

(B) got

(C) become

(D) made

2. The journalist asked me___________ .

(A) what was my favourite pastime

(B) what is my favourite pastime

(C) what my favourite pastime was

(D) what my favourite pastime is

3. You'll be here tomorrow,____________ ?

(A) isn't it

(B) won't you

(C) will you

(D) will you be

4. There was__________ to eat and drink after the party.

(A) many

(B) lot of

(C) a lot

(D) lots of

5. __________that strange man sitting over there?

(A) Whose

(B) Which

(C) Who's

(D) Who

6. A kangaroo has such strong legs_________ it can jump over a car.

(A) so

(B) so as

(C) as

(D) that

7. Is there_________ in the room?

(A) somebody

(B) something

(C) anybody

(D) anywhere

8. The telephone was__________ by Alexander Graham Bell.

(A) discovered

(B) invented

(C) explored

(D) studied

9. This programme__________ me a lot of money.

(A) cost

(B) costed

(C) had costed

(D) was cost

10. It happened__________ our way home.

(A) in

(B) on

(C) for

(D) about

11. By the time we arrived at the station, the train__________ .

(A) left

(B) has left

(C) had left

(D) was left

12. Mount Everest is___________ mountain in the world.

(A) high

(B) highest

(C) the higher

(D) the highest

13. What do you want__________ ?

(A) me to do

(B) that I'll do

(C) I do

(D) for me to do

14. If he lived in the country he__________ happier.

(A) was

(B) is

(C) will be

(D) would be

15. Rome is famous for its__________ archaeological sites.

(A) ancient

(B) old

(C) old-fashioned

(D) modem

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(A) To learn

(B) To learning

(C) Learning

(D) Learning to

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(B) on

(C) in

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(C) knew

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(B) will can

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(B) a weather

(C) weather

(D) the weathers
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