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26 tháng 6 2021

a) \(\left|x-3\right|\ge0\)

\(\Rightarrow\left|x-3\right|+2021\ge2021\)

\(\Rightarrow A\ge\dfrac{2020}{2021}\)

Dấu = xảy ra khi x = 3

Vậy:............

b) Ta có: \(\left\{{}\begin{matrix}\left(x-\dfrac{3}{5}\right)^2\ge0\\\left|y+1\right|\ge0\end{matrix}\right.\)

PT => \(\left\{{}\begin{matrix}x=\dfrac{3}{5}\\y=-1\end{matrix}\right.\)

21 tháng 7 2021

6 street

7 elderly

8 blind

9 homeless

10 deaf

11 sick

12 rich

13 disabled 

14 poor

15 dumb

17 tháng 12 2021

How might you feel?

What should your parents do ?

17 tháng 12 2021

How might you feel?

What should your parents do?

2 tháng 8 2021

    My hobby is listening to music. I started this hobby 2 years ago, when I saw an interesting music show on TV and I was interested in  it right away. After that, I shared my hobby with my brother, Phuc, and he liked it too. To continue my hobby, I always go to the concert, or listen to music in my free time. When I listen to music, I feel comfortable. Listening to music is very useful and helpful, so I will continue this hobby in the future.

2 tháng 8 2021

Refer.

My hobby is playing games. However, I’m not addicted to the game at all. I only play games when I’ve done my work. The game that I often play is League of Legends. This is a game that requires high strategy and flexible finger manipulation. I often play games with my friends. We split into teams and fight each other. When we play the game we become closer. Playing games helps me forget about the pressures in school. In order to play a healthy game, I only play 1 hour a day. My parents also know my gaming goals so I agree. On my 15th birthday. I was received a computer from my dad set for my study and entertainment games. I like to play games but I also know the balance between playing time and studying. If you can do that, the game is not bad.

 
21 tháng 7 2021

36. Bob has never seen this movie before.

39 Have you received any letter from your parents yet?

43. People plant trees in public areas.

44. I didn't go to school because it rained heavily yesterday.

45. How long have you studied at school?

12 tháng 10 2023

On time: đúng lúc theo một lịch trình có sẵn, kế hoạch 

In time: không có kế hoạch, lịch trình( kịp lúc để làm một hoạt động khác) 

VD1 : Even though it rained, I still went to school on time 

VD2: The test will start in 5 minutes. I hope he can arrive here in time 

2 tháng 5

On time:dung luc,dung thoi diem va thoi gian da len ke hoach truoc do

In time:khong co lich trinh hoac ke hoach truoc do,vua kip luc de lam mot dieu gi do

Vd on time:She is a hard-working student,he is always goes to school on time

Vd in time:He rushed to catch the train and arrived at the station just in time for the departure

8 tháng 10 2021

One day, some people were standing at a bus stop. Two of them found out that there were no trains that day. After that, they went back home.

 

Một ngày nọ, một số người đang đứng ở một trạm xe buýt. Hai người trong số họ phát hiện ra rằng không có chuyến tàu nào vào ngày hôm đó. Sau đó, họ trở về nhà.

24 tháng 6 2021

2 hard => as

3 life => from life

4 as => bỏ

5 the same => as

6 as => from

7 like => as

8 length => long

9 than => as

10 is => has