10-Some of these traditional dresses have been modernity

11-Mary Vietnamese women continnue to wear the unique and fashionable dress. [fashion]

12-Lan wants to become a fashion designer when she grown up.

13-Although its services are not very good, the hotel is convenient for the beach. .

14-Although the ao dai is the traditional dress of Vietnamese women, not many of them wear it at work.

15-He never has any accidents. He is a careful driver.

16-It is a nice shop and the assistannces are all polite and very helpful

17-This new center is an interesting development

18-We can see many advertises on T.V every day.

19-The Internet is a wondeful invention of modern life.

20-What have they done to their modernization own country.

21-Hanoi is much different from Tokyo, isn't it? [difference]

22-The Internet has limited.It is very time -consuming and costly.

23-There are many celebations in our country of a years.

24-We can save natural resources by using solar energy.

25-The Pikes aren't satisfied with their preparation for Christmas.

B = (2 + 2n) x n : 2

B = 2(n + 1) x n : 2

B = n x (n + 1)

Mà n > 5 (số cuối là 10) nên B không thể là số chính phương

số bé là :88

số lớn là:112                 duyet nhe

Tìm số tự nhiên n nhỏ nhấtđể có bất đẳng thức \(\left(a^2+b^2+c^2\right)^2\le n\left(a^4+b^4+c^4\right)\)

Ta có:ab-ba=54

=>(10a+b)-(10b+a)=54

=>10a+b-10b-a=54

=>9a-9b=54=>9(a-b)=54=>a-b=6

Do đó a>b

Mà a+b=10

=>a=(10+6):2=8

=>b=(10-6):2=2

 Vậy ...

There is one mistake in each sentence, find out and correct it

1. As soon as he will come back from his office, tell him to see me.

2. He regretted not say goodbye to his girlfriend at the airport.

3. The town we visited was a four - days journey from our hotel, so we took the train instead of the bus.

4.Our new neighbors had been living in Paris since ten years before moving to their present house.

5. The exlanation that our teacher gave us was difficult than the one you gave us.

 =273/640 cho mk

số bị chia: 777

số chia: 333

Nhớ **** cho mình nha!

Đáy lớn của hình thang là 8,5