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Bạn ghi cho đúng môn học nhé !
1) ABCD là HBH thì:
\(\overrightarrow{AB}=\overrightarrow{DC}\)\(\Leftrightarrow\) \(\left(1;-5\right)=\left(-2-x_D;1-y_D\right)\)
\(\Leftrightarrow\) \(\hept{\begin{cases}-2-x_D=1\\1-y_D=-5\end{cases}}\)\(\Leftrightarrow\) \(\hept{\begin{cases}x_D=-3\\y_D=6\end{cases}}\)
2) Bạn chuyển hết vế phải qua vế trái
Xác định tọa độ các vecto MA MB MC (nhân với các hệ số tương ứng)
thì ta có được hpt:
\(\hept{\begin{cases}x_{MA}-2x_{MB}+x_{MC}=0\\y_{MA}-2y_{MB}+y_{MC}=0\end{cases}}\)
Bạn tự làm tiếp nhé
1. This is Phu Quoc beach in Vietnam.
(Đây là bãi biển Phú Quốc ở Việt Nam.)
2. I guess there are millions of people visting this beach every year.
(Hằng năm có hàng triệu người đến bãi biển này.)
Everybody likes to watch TV and everybody has a favourite TV programme. I want to tell you about my favourite TV programme. I like to watch TV programme "Week of sports" very much, because I like sport. My favourite kind of sports is HOCKEY! I also like tennis and football. In this programme it is told about hockey, tennis. footbal and other kind of sports. That`s why I like it very much. It is told about all events of sports. "Week of sports" is very interesting and faseinating. I recommend to watch it.
I have told you about my favourite programme. Now I want to know about your favourite TV programme. What TV programme do you like? Why do you like to watch it?
Bạn có tham khảo ^^
Brighter Future "is a television program of my favorite. Program profound humanitarian, helping the unfortunate lives, wants children to get a home, a chance to go to school. Program as a bridge between the people to live in affluence with solitary children, disadvantaged ... It also brought a precious tradition of the nation: "Nhuong Com will dress". And particularly, it is also a chance for the young know look at the children in the program to strive for in life and learning.
| Mistake | Correction | Mistake | Correction |
| 1. was | were | 6. Found | Founded |
| 2. heavy | heavily | 7. someone else car | someone else’s car |
| 3. hear | hearing | 8. homeworks | homework |
| 4. crowding | crowded | 9. knows | is known |
| 5. getting | to get | 10. In | On |
V. There is one mistake in each of the following sentences. Find and correct it.
1. During The Second World War, almost a third of a million people was=> were killed.
2. It was raining heavy=> heavily when I woke up yesterday morning.
3. Doctors have known for a long time that loud noises=> noise can cause hear damage or loss.
4. Streets of Bangkok are usually crowding=> crowded with people selling food, clothing, flowers and souvenirs.
5. It often takes my mom half an hour getting=> to get to work by underground every morning.
6. Found=> Founded in the 12thcentury, Oxford University ranks among the world’s oldest ones.
7. Brown isn’t in his own car, he is driving someone else car=> someone else's.
8. The homeworks that your teacher assigned is due on=> to Tuesday unless you have made prior arrangements to turn it in late.
9. He started working as an editor 10 years ago but now he knows=> is known as a famous MC.
10. In=> on icy winter days, I prefer being driven to driving myself.