Предмет: Математика, автор: LesyaNovikova

в розыгрыше первенства по футболу участвует 17 команд. каждая команда должна сыграть с каждой 2 раза: один раз на своём поле, а один раз-на поле соперника. сколько матчей будет проведено в турнире?

Ответы

Автор ответа: ksensanina

Всего 17 команд, каждая команда играет с противником 2 раза.
Поэтому 17 возводим в квадрат и получаем 289 игр. Но нам нужно учесть те игры, которые повторились,поэтому мы вычитаем 17 и получаем 272 игрыю

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GRAMMAR (Revising Past Passive, Present Passive, Present simple and Past Simple)

2 Read and choose the appropriate word or phrase.

Legend of Leopard: The Samarkand Symbol

“By this legend, when Samarkand (1) …, a leopard came down from the Zarafshan mountains. The leopard walked in the streets, near buildings and then (2) … to the mountains. Since that time people of Samarkand (3)…“leopards”. And all Samarkand’s flags (4) … an image of the leopard.” This legend (5) … by Abu-Said Ibn

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5 a) was told b) tells c) told

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9 a) were brought b) bringing c) was brought

10 a) shows b) showing c) are showing

4 Complete the sentences with the words.

device, media, humanoid-like, web browser, digital electronics, apps, headset

1) I lost a … to my phone.

2) My favourite … are Facebook, Youtube and Whatsup.

3) Kengoro is a … robot which can do things better than most humans can.

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from computer menu.

5) … is electronics that operate on digital signals.

6) A … is a computer program that makes it possible for you to read

information on the Internet.

7) The life of the British royal family has always been of interest to the… .

5.Read and choose the right words. baker different leave air bread make

Samarkand bread

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or large but it is always delicious. That’s why people say legends about it.Once Khan of Bukhara asked his advisers why the (3) … is taken from Samarkand to Bukhara, if they could bake it in Bukhara. He was told

that bread would be tasty if it was baked only in Samarkand. But the khan did not believe it and ordered to bring Samarkand’s best (4) … to Bukhara and ordered him to bake bread in Bukhara. But the bread was (5) … from what it was in Samarkand. Advisers decided that the reason was in the ingredients and brought from Samarkand a tandyr oven, flour, water, but even then the bread was different from Samarkand one. Then the baker said: “Probably, the reason is in the air.” But it was impossible to transport the (6) …, and soon the baker was allowed to return home. People began to carry bread from Samarkand as before.

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