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30 tháng 10 2021

(3567849076 + 74653423) - 90876

= 3642502499 - 90876

= 3642411623

30 tháng 10 2021

3642411623

20 tháng 8 2023

We pronounce have and has with the /ə/ sound when they are weak.

20 tháng 8 2023

Tham khảo

We pronounce have and has with the /ǝ/ sound when they are weak.

5 tháng 3 2022

bucminh

5 tháng 3 2022

Giúp mình với mn ơi 

31 tháng 5 2019

What bạn đăng cái gì vậy?

Chả hiểu, đăng chi cho mắc công nhà.

^_^;^.^

Ý bạn là : A good place to work »60% of the time, a good time» 20% of the time »› c. What is the limit for 100 kg of rice?
Đúng chứ

20 tháng 2 2023

1:egg;end;ten;...

2:apple;bag;hat;......

14 tháng 2 2022

/e/:chess,competitive,exercise,schedule,educational

/æ/:travel,match,fantastic,congratulation,marathon 

Đề thiếu rồi bạn

Exercise 2: Decide what part is pronounced /ə/ or /ɜː/ in each word, the first one has been done for you as an example.      0.   further Æ further->/ɜː/      1. occur                 2. circus                 3. German             4. burden               5. colonel      ......................        ......................        ......................        ......................        ......................      6. courtesy            7. surgeon             8. burglar              9....
Đọc tiếp

Exercise 2: Decide what part is pronounced /ə/ or /ɜː/ in each word, the first one has been done for you as an example.

      0.   further Æ further->/ɜː/

      1. occur                 2. circus                 3. German             4. burden               5. colonel

      ......................        ......................        ......................        ......................        ......................

      6. courtesy            7. surgeon             8. burglar              9. curtain               10. purchase

      ......................        ......................        ......................        ......................        ......................

2
9 tháng 6 2021

từ điển hân hạnh tài trợ bài tập này

9 tháng 6 2021

can you lên Google dịch ?

I/ Put a/ an, the or Æ in each space to complete the following sentences. 1. I’m sorry. I didn’t mean to do that. It was _____ mistake.            2. There were no chairs, so we had to sit on _____ floor.3. Lucy has just gotten _____ job in _____ bank in Chicago.4. There’s _____ bookstore on _____ corner near my house.5. It’s very cold in here. Can you close _____ window, please?6. If you go past _____ post office, can you get me some stamps?7. It was _____ very hot day. It was _____ hottest...
Đọc tiếp

I/ Put a/ an, the or Æ in each space to complete the following sentences.

1. I’m sorry. I didn’t mean to do that. It was _____ mistake.            

2. There were no chairs, so we had to sit on _____ floor.

3. Lucy has just gotten _____ job in _____ bank in Chicago.

4. There’s _____ bookstore on _____ corner near my house.

5. It’s very cold in here. Can you close _____ window, please?

6. If you go past _____ post office, can you get me some stamps?

7. It was _____ very hot day. It was _____ hottest day of _____ year.

8. What’s _____ name of _____ woman who sat beside you at the dinner?

9. How often do you go to _____ movies?

10. “Can you tell me where _____ Room 306 is, please?” “It’s on _____ third floor.”

11. He lay down _____ ground and looked up at _____ sky.

12. You’ll find _____ information you need at _____ top of _____ page 24.

13. _____ moon goes around _____ earth every 27 days.

14. He doesn’t usually have _____ lunch, but he always eats _____ good breakfast.

15. If you live in _____ foreign country, you should try and learn _____ language.

16. _____ next train to Brighton leaves from _____ Platform 5.   

17. Last year we visited _____ Canada and _____ United States.

18. _____ highest mountain in _____ Africa is _____ Kilimanjaro.

19. _____ Mediterranean Sea is the sea between _____ Africa and _____ Europe.

20. _____ Mississippi is _____ longest river in _____ North America.

4
19 tháng 3 2022

ngắn thôi .-.

19 tháng 3 2022

Bài có nhiều đâu cậu?

13 tháng 10 2016

\(\frac{a^5+b^5+c^5}{3}\ge\left(\frac{a+b+c}{3}\right)^5\)

\(\left(1\right)\Leftrightarrow\left(\frac{3a}{a+b+c}\right)^5+\left(\frac{3b}{a+b+c}\right)^5+\left(\frac{3c}{a+b+c}\right)^5\ge3\)

Vậy cần chứng minh (1) đúng với a,b,c>0

Áp dụng BĐT Bernouli ta có:

\(\left(\frac{3a}{a+b+c}\right)^5=\left(1+\frac{b+c-2a}{a+b+c}\right)^5\ge1+\frac{5\left(b+c-2a\right)}{a+b+c}\left(2\right)\)

Tương tự ta đc:

\(\left(\frac{3b}{a+b+c}\right)^5\ge1+\frac{5\left(c+a-2b\right)}{a+b+c}\left(3\right)\)

\(\left(\frac{3c}{a+b+c}\right)^5\ge1+\frac{5\left(a+b-2c\right)}{a+b+c}\left(4\right)\)

Cộng theo vế của (2);(3) và (4) ta có:

\(\left(\frac{3a}{a+b+c}\right)^5+\left(\frac{3b}{a+b+c}\right)^5+\left(\frac{3c}{a+b+c}\right)^5\ge3\)

Đpcm

 

12 tháng 10 2016

Trần Việt Linhsoyeon_Tiểubàng giảiNguyễn Huy TúNguyễn Huy ThắngPhương AnVõ Đông Anh TuấnLê Nguyên HạoSilver bulletKẹo dẻoNgô Tấn TríHoàng Lê Bảo Ngọc