Предмет: Математика, автор: TheAnnaKIR

Помогите срочно! номер 14 (б)

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Автор ответа: RussianMastermind

P=((25+20+25)+60)*2=260(м)
S= S(всего прямоугольника) - S(вырезанной части)=(25+20+25)*60-20*10=420-200=220(м^2)

Автор ответа: TheAnnaKIR

А можно S по понятливее объяснить?

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1. What do you use this gadget for? Write as many things as you can.

2. Complete the sentences with the correct form of the verb. Use Future Simple, going to, Present Simple or Present Continuous.
1. I’m sure our team _____ (to win) the competition.
2. We _____ (to have) a test tomorrow.
3. - Be careful! You _____ (to hit) your head.
4. - It is raining. I _____ (to take) an umbrella.
5. He has saved enough money and he _____ (to buy) a new smartphone.

3. Open the brackets and complete the sentences. Use Zero or First Conditionals.
1. If you _____ (to use) your phone at the exam, you _____ (to be) dismissed.
2. When I _____ (to cook) salads, I _____ (to use) only olive oil.
3. All the objects _____ (to become) warmer, when temperature_____ (to rise).
4. If we _____ (not hurry), the concert _____ (to start) without us.
5. If Peter_____ (not come) to my place, I _____ (watch) TV

4. Translate these sentences into English. Mind the tenses.
1. Моя сестра всегда ищет свой телефон.
2. Он ждет с нетерпением каникул.
3. Моя мама заботится обо мне и моем брате.
4. Я поищу эту информацию завтра.

5. Read the essay. Match the paragraphs to the headings.

1. Viewpoints and examples
2. Opposing viewpoints and examples
3. Introduction (presentation of the topic)
4. Conclusion (summary of the topic)

Animals in zoos. What’s your opinion? Is it fair?
(1) There are a lot of zoos in the world and millions of people visit them every year. But are zoos harmful or helpful to animals, which are caged there?

(2) I strongly believe that we should not keep animals in zoos because captivity is not natural for them and it is a constant stress to a wild animal. Keeping animals in zoos harms them by denying them freedom of movement and association. What is more, zoos are like prisons for animals as they live in small cages and do not get necessary food. In addition, animals become very aggressive and unpredictable as they get older and often attack zoo keepers and other people.

(3) However, most people think that zoos help endangered species survive. But this is not true because most rare animals are extremely difficult to breed in captivity. Besides, in zoos, it is almost impossible to meet the animals’ natural needs. Another argument for keeping animals in zoos is that people learn something new about these animals. Actually, zoos do not teach us much because animals do not act the way they would in the wild. I think we can learn more about animals by watching wildlife programs on TV.

(4) In conclusion, I would argue that zoos do not seem to help endangered species and keeping animals behind bars only for the sake of our entertainment is not quite fair. In my opinion, people must create nature reserves, where wild animals will be able to live in their natural environment.

endangered species – виды, находящиеся под угрозой вымирания
captivity – неволя
wildlife – дикая жизнь

1. Form the adjectives from the following nouns. Use –ous, -ful, -less, -y, -al.
1. Tradition
2. Danger
3. Dirt
4. Help