х-у=2. 3х-2y=9 Решите систему равнения методом подстановки - №29201116

х-у=2. 3х-2y=9 Решите систему равнения методом подстановки
- Предмет:
  Алгебра
- Автор:
  chi chi
- 5 лет назад

Ответы 1

Можно все через x сделать , а не через y
- Автор:
  chumphc3f
- 5 лет назад
- 0
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Определите значение переменной s после выполнения следующего фрагмента
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s:=10;
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Підскажіть будь ласка: ,,висловлювання кожного зі співрозмовників, що бере участь у діалозі" мені дуже потрібно завтра на контрольну роботу тому, що буде капець.
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помогите пожалуйста:) 20 баллов)
1. Larry ____ speak Spanish, German, and Hindi.
a) can b) should c) may d) must

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a) may b) should c) might d) has to

3. …you speak any foreign language?
a) may b) can c) should d) must

4. You _____ enter without a tie.
a) aren’t b) can’t c) ought not d) weren’t

5. I haven’t decided yet where to go for my holiday. I ____ go to Greece.
a) may b) would c) should d) can
6. The parcel __________(not/deliver) yet.
a) hasn’t been delivered yet b) has not deliver
c) have not been delivered d) didn’t deliver

7. Alpha Romeo cars _________ (make) in Italy.
a) made b) make c) are made d) is made

8. The thief _________ (arrest) late last night.
a) has been arrested b) have been arrested
c) was arrested d) were arrested

9. Earlier this evening an earthquake hit Cairo, Egypt. Many people ________ (kill).
a) killed b) are killed c) was killed d) were killed

10. The letters ________ (type) at the moment.
a) type b) are being typed c) types d) are typed
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a) is being reconstructed c) was being reconstructed
b) will be reconstructed d) reconstructs
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a) will be signed c) are signed
b) will have been signed d) is signed
14. America ___ several centuries ago.
a) had been discovered c) was discovered
b) will be discovered d) is discovered
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Даны векторы:
a=(2,3,0); b=(-6,0,1); c=(5,1,-1)
Найти:
1) 2c-5a;
2) объём параллелепипеда, построенного на векторах a,b,c
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