Решите систему уравнений 3-мя способами: подстановка, графич, - №32456925

Решите систему уравнений 3-мя способами: подстановка, графич, сложение

{x-3y=6
{2y-5x=-4
- Предмет:
  Математика
- Автор:
  lincoln362
- 6 лет назад

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50 балов!!!!! помогите
Итоговая контрольно-комбинированная работа в 8 классе
1 variant

READING

Harry Bolton didn’t really like sport at all until he discovered something both new and unusual. “I was listening to the radio one day when I heard something that I thought must have been a joke. The DJ was talking about underwater hockey! When I realized it actually was a sport, I decided to find out more about it. To my surprise, I found a local team and before I knew it, I was part of it!”
Unlike water polo, where the action takes place above the water, underwater hockey is played at the bottom of the pool. Players wear masks, flippers and snorkels during the game. “The rulers are simple, you just have to slide the puck into the opposing team’s goal,” says Harry.
Underwater hockey was invented by a British diving club in 1954. Harry told us, “Unfortunately it’s not much of a spectator sport, as all people watching from outside the pool can see are lots of splashing and flippers!”
True or False?
1. Harry Bolton played ice hokey before………..
2. Underwater hockey is like water polo………..
3.Underwater hockey was invented in Canada……
4. According to Harry the rulers are not difficult……
5. You need some equipment such as masks, flippers and snorkels…….

Choose the right variant.
6. Tony’s …… He doesn’t feel comfortable with people.
a. easy-going b. sociable c. shy
7. Dave is …….He must go on a diet.
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a. cook b. am cooking c. have cooked
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a. speaks b. is speaking c. has spoken

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12. I can’t put … that kind of behavior any longer.
13. 6. How long can camels go… water?
14. 11. This tie goes….. …. your shirt very well.
15. 12. People can go….water for about three days.

Complete the sentences using Past Simple or Past Continuous, Present Perfect , Present Simple
16. I ….already …….my homework. ( do)
17. I …….this book last year. (read)
18. We …….never …….to Washington. (be)
19.Tom ……computer games at five o'clock yesterday. (play)
20. I…….the dog for a walk every day after school. (take)

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- 6 лет назад
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- Предмет:
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- Автор:
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