Предмет: Алгебра, автор: gadjigag

x^2(3x^2-18)=9(27-2x^2)

Ответы

Автор ответа: artemevaan
1

Ответ: х=3. Решение во вложении

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Listening

Task 1 (4 балла).

Listen to the conversation carefully and complete the sentences.

There is thunder and __________________________ now in America.
In Northern Canada the weather is cold and __________________________.
The weather in Europe is __________________________.
The weather in Asia is __________________________ and warm.


Reading

Task 2 (5 баллов).

Read the text. Identify True and False sentences.



Tom is an animal lover. He admires all animals. When he was a kid, Tom read many books about animals. The most exciting thing for him was going to the Zoo. He could spend hours watching the animals walk around, sit, or even sleep. When Tom was older he went on a safari to Tanzania. He saw animals in wild nature. Now Tom thinks about the future of animals. Some of his favourite animals are dying out. Tom thinks that people need to save wild nature. Children must have the chance of seeing animals in the wild in future.



Write True or False next to the sentences.

Tom doesn’t love animals. ____________________
Tom liked to go to the Zoo very much. ____________________
When Tom was a kid, he went on a safari to Tanzania. ____________________
He saw wild animals in cages in a safari park. ____________________
People must save wild nature. ____________________


Writing

Task 3 (4 балла).

Link the sentences. Fill in the gaps with connectors so, or, because, and. Use each connector only once.

When it is raining people wear raincoats ____________ take an umbrella.
We put on warm coats and mittens ____________ we are going to make a snowman.
It is very hot today _____________ we are wearing T-shirts, shorts and sandals.
It is cool and wet in autumn _____________ sometimes it can be windy and foggy.


Speaking

Task 4 (5 баллов).

Choose ONE picture. Look at the picture and talk about it. Describe the picture, ask and answer questions as in the example.



Example 1:

Question 1: – What can you see in the picture?

Answer 1: – I can see a Zoo in the picture.

Question 2: – Do you like to go to the Zoo?

Answer 2: – I like to go to the zoo to watch animals and birds.

Question 3: – What animals are there in the Zoo?

Answer 3: – There are many different animals there.



Example 2:

Question 1: – Do you like to visit zoos?

Answer 1: – Yes, very much. Sometimes I go to the Zoo with my family.

Question 2: – What can you do there?

Answer 2: – We can feed animals there.

Question 3: – What animals do you like?

Answer 3: – I like all animals.



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Изображение / shutterstock.com