Ответ по предмету Алгебра: Найти значения выражения Cos^3α-Sin^3α,если Cosα-Sinα=0,2

Предмет: Қазақ тiлi, автор: mectamarket638

Ответить только 2 вопроса можно пж по быстрее

5 лет назад

Предмет: Английский язык, автор: daniilshewa228

1. Match the words/phrases to their definition.
1 computer games
2 spot
3 alarm system
4 surf the Net
5 beach volleyball

A. look for information on the computer
B. fun activities on the computer
C. machine that signals danger
D. a sport
E. a place
2. Complete the sentences with the correct word.
• heavy • helpful • crowded • convenient • peace

1. They went for a run in the country because they wanted some … and quiet.
2. He spent the morning in Birmingham, but found the streets very …
3. In a big city, you will always find … public transport.
4. Her cousin hates driving in … traffic.
5. John lives in the country because he likes the friendly and … people.

3. Put the verbs in brackets into the Present Simple or the Present Continuous.

1 .He (visit) his uncle every Saturday morning.
2. I (cook) lunch today, so please don’t be late.
3. We (go) to the park this evening. Do you want to come with us?
4. She (write) an article about crime in big cities.
5. He (feed) the cows every evening.
6. She (leave) late on Fridays.
7. He (travel) to school by tube every morning.
8. She (think) of painting her house.
9. He (study) in his bedroom at the moment, but he can meet us at the cinema later.
10. I really have to go. My train (leave) at 8:30.

4. Use the prompts to give the correct advice, using either should or shouldn’t.

e.g. A: I’m really tired today.
B: (bed/early) You should go to bed early tonight.
1. A: I’m very worried about my best friend.
B: (worry/so much)
2. A: I feel very tired.
B: (stay up/late)
3. A: I’ve broken my sister’s new mobile phone.
B: (tell/tonight)
4. A: I’ve got a bad headache.
B: (take/painkiller)
5. A: It’s very cold today.
B: (wear/a jacket)
5. Read the text and mark the sentences T (true) or F (false).
Fires that happen in the home are a very serious problem today. In America, there are over 100,000 home fires every year and many start in the kitchen. There are a lot of things you can do to protect your house from fire.
First of all, you need to follow a few safety rules. You should never leave the kitchen while you are cooking. It's also a bad idea to wear loose clothes when you cook. Always keep the cooking area clean and don't let children come very close to the cooker.
It is also important to know what to do if a fire starts. If a pan catches fire, don't throw water on it! Put a blanket over it and turn off the heat. If the fire doesn't go out, call the fire brigade. If a fire starts inside the oven, keep the door shut and turn it off. If you burn yourself, run cold water over the burn.
Finally, install a smoke alarm and learn how to use it. Also, know the number of your fire brigade by heart. It's better to be safe than sorry.

1. Nowadays, fires in the home aren’t very dangerous.
2. In America, there are more than 100,000 home fires a year.
3. A lot of home fires start in kitchens.
4. You should always leave the kitchen while cooking.
5. You shouldn’t wear loose clothes when cooking.
6. You should keep your cooking area clean.
7. Children should stay close to the cooker.
8. If a fire starts, pour water on it to put it out.
9. Call the fire brigade if a fire doesn’t go out right away.
10. You should have a smoke alarm and know how to use it.

5 лет назад

Предмет: Физика, автор: egorchugun2007

Даю 50 балов пожалуйста
У алюмінієву посудину масою 1,5 кг, де міститься вода масою 5 кг при температурі
7 °С поклали шматок заліза нагрітий до 520 °С. Визначте масу заліза, якщо
температура суміші стала дорівнювати 40 °С.

5 лет назад

Предмет: Математика, автор: irinairinka82

В мешке лежит 35 конфет , лимонных на три меньше чем апельсиновых. Дино хочет вытащить , не глядя, из мешка хотя бы три лимонные конфеты. Какое наименьшее число конфет ему надо взять, не глядя, чтобы среди них наверняка было три лимонных???

9 лет назад

Предмет: Информатика, автор: myr4

кодировкой в которой для кодирования одного символа используется 2 байта является: а) MS-DOS b) KOИ-8 c)Unicode d)ISO

9 лет назад

Найти значения выражения Cos^3α-Sin^3α,если Cosα-Sinα=0,2

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