Ответы 1
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I3x-1I-I1-4xI=0Раскрываем модули и получаем систему уравнений:3x-1-(1-4x)=0 3x-1-1+4x=0 7x=2 x=2/7-3x+1-(1-4x)=0 -3x+1-1+4x=0 x=0Ответ: х=2/7 х=0.
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Автор:
gwendolynhxut - 6 лет назад
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I. Употребите правильно личные местоимения в следующих предложениях.
1) ... is a teacher. a) I
2) ... are good friends. b) You
3) ... is a black table. c) He
4) ... am a pupil. d) She
5) ... is a clever man. e) It
6) ... are fine. f)We
7) ... often go for a walk together. g) They
II.Какое личное местоимение можно употребить в следующих предложениях?
1) My little brother Nick is a very bad boy. I don`t want to play with ... .
2)Your friends are plantng flowers in the garden. Would you lke to play with ... ?
3) Two boys ask Tom : ”Could you give ... your nice red pencils, please?”
4) Ann is a very kind and clever girl. Tell ... about it. I think she can help you.
5) Little girl asks her mother : “Will you give ... one more sweet, please?”
a) him; b) her; c) us; d) them; e) me;
III. Выберите нужные местоимения и вставьте их вместо точек.
1)My aunt and my uncle have got two children. Both ... children are girls.
2)My sister has got a little kitten. ... kitten is very nice. ... name is Jippy.
3)My brother and I have got many toys at home. ... toys are very nice.
4)There is a big doll on the sofa. I like to play with ... beautiful big doll.
5)You live in Moscow, don`t you? And what about ... sister Ann?
6)He is playing football with ... friends in garden.
a) my; b) your; c) his; d) her; e) its; f) their; g) our.
IV. Какое из вопросительных местоимений вы выберете для следующих предложений.
1) ... many kittens are there on the sofa?
2) ... is your brother`s birthday?
3) - do you cry, little boy?
- I can`t find my toy!
4) - ... is on duty today?
- I am.
- ... is Tom? Is he ill?
- Yes, he is.
5) ... do you usually get up?
6) I can`t understand ... you want.
7) I don`t like ... it rains.
8) ... long does it take you to come back home from school?
9) - Take your umbrella with you, Jane!
- ... for?
- it is going to start raining!
10) ... often did you go to the cinema last week?
11) ... did you play football with in the yard yesterday?
a) where; b) when; c) what); d) why; e) how; f) who.
V. Употребите правильно указательные местоимения.
1) ... cat is grey, but ... one is white.
2) ... puppies are black and ... dogs are brown.
3) ... is my book and ... are my books too.
4) ... is his car and ... are his friends` cars.
a) this; b) that; c) these; d) those.
VI. Выберите правильный вариант.
1) ... kittens are very funny.
a) these; b) this; c) that.
2) Are ... boys playing hide-and-seek?
a) that; b) those; c) these.
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