mk thấy đề bài sai sai

th1:x=3 y=2

th2:x=7 y=4

Ưu điểm của công nghệ chế tạo phôi bằng phương pháp hàn: 

A. mối hàn kém bền 

B. mối hàn hở 

C. dễ cong vênh 

D. tiết kiệm kim loại 

1. I'm sorry I can't go with you because I'm working....on.... my project .

2. What's .....wrong....., Minh ? - I don't know . Perhaps we are lost.

3. This is the first time we have reached......to...... Hoi An . Everything is fantastic .

December is the twelfth month of the year

1.Ho Chi Minh city / big / Da Lat city

Ho Chi Minh city is bigger than Da Lat city.

2.Viet nam / have / any big river / ?

Does Viet nam have any big river ?

3.We / have / a lot / rain

We have a lot of rains here.

4.Which / the biggest city / world / ?

Which is the biggest city in the world ?

5.A : Why / An / not / want / go outside ?

B:because / it / too / hot

A: Why does An not want to go outside ?

B: Because it is too hot.

6. I / want / doctor / . / I / like / help / people

I want to be a doctor. I like to help people.

7. There / usually / a lot of / rain / the weekend / this place

There are usually a lot of rains at the weekend in this place.

8.Iohn / like / take / photo / when / he / go / holiday

John likes taking photo when he goes on holiday.

9. My / school / near / house / so / I / go / school / foot

My school is near my house so I go to school on foot.

10. Grandmother / sixty - seven / much younger / than grandfather

Grandmother is sixty - seven and much younger than grandfather.

bn ơi, bài của mk đăng lên bị lỗi

đáng ra phải là

KL: 48 = 2⁴.3

KL: 72 = 2³.3²

Phân tích 48 & 72 ra thừa số nguyên tố

KL:48 = 2⁴.3

KL:72 = 2³.3²