Cho hình thang ABCD ( AB//CD). Một đường thẳng song song với 2 đáy, cắt cạnh bên AD ở M và cắt cạnh BC ở N.

Chứng minh \(\dfrac{AB}{AD}\)=\(\dfrac{CB}{CD}\)=\(\dfrac{2}{3}\).

He is helping her mother

-» Her

You should do morning exercise regularly

-»If i

If you didn't come to my house, i would be said

-» Unless

Nam like reading books

-» Nam is

Do you like chicken?

-»You

\(1, (-x+5)(x-2)+(x-7)(x+7)=(3x+1)^2-(3x-2)(3x+2)\)

\(2, (5x-1)(x+1)-2(x-3)^2=(x+2)(3x-1)-(x+4)^2+(x^2-x)\)

3, \((x-7)(x+1)-(x-3)^2=(3x-5)(3x+5)-(3x+1)^2 +(x-2)^2-x^2\)

Giúp em với

1.People know that cars pollute the environment.

It____________________________________________________________________

Cars ________________________________________________________________________________

2.People believe that the robber has worked in the bank.

It____________________________________________________________________

The robber___________________________________________________________________________

3.Many people believe that she is an honest person.

It____________________________________________________________________

She ________________________________________________________________________________

4.They think that the president will arrive soon.

It____________________________________________________________________

The president ________________________________________________________________________

5.It is reported that many passengers died in the crash.

People_____________________________________________________________________________________

Many passengers __________________________________________________________________________

6.It is expected that the prices will rise again this month.

They_________________________________________________________________

The prices ___________________________________________________________________________

7.It is proved that life doesn’t exist on the moon.

Scientists_____________________________________________________________

Life _______________________________________________________________________________

8.They say that he has passed the final exam with the best result.

It____________________________________________________________________

He is _______________________________________________________________________________

9.He is said to have been in the army.

People say ___________________________________________________________________________

10.It is believed that the man escaped in a stolen car.

People _______________________________________________________________

The man ____________________________________________________________________________

11.People say that he has been all over the world.

It____________________________________________________________________

He _________________________________________________________________________________

12.It is believed that the man is 108 years old.

People_______________________________________________________________

The man ____________________________________________________________________________

13.People believe that Omachi is from Quangnam.

It______________________________________________________________

Omachi________________________________________________________
14. They think that Danny can clean the floor.

It____________________________________________________________

Danny_______________________________________________________
15. They thought that Nha had had her photos taken.

It____________________________________________________________

Nha_______________________________________________________
16. People think that Omachi has been punished by the teacher.

It____________________________________________________________

Omachi_______________________________________________________
17. They think Benam will attend the party.

It____________________________________________________________

Benam_______________________________________________________
18. They said that Junbi found sick 2 weeks ago.

It____________________________________________________________

Junbi_______________________________________________________
19. People believe that Leanh is suffering from something serious.

It____________________________________________________________

Leanh_______________________________________________________
20. People say that four members have been dismissed from the class

It____________________________________________________________

Four members _______________________________________________________
21. They believe Maiphuong has been feeding 4 dogs.

It____________________________________________________________

Maiphuong _______________________________________________________
22. People think the government will build a supermarket here.

→ The government________________________________________________

→ It________________________________________________

23. People believed that fresh air was bad for sick people.

→ Fresh air________________________________________________

→ It ________________________________________________

24. They say he is an agitated (xúc động) state.

→ He ________________________________________________

→ It ________________________________________________

25. We expect that the rate of inflation (lạm phát) will fall.

→ The rate of inflation________________________________________________

→ It ________________________________________________

26. They say he is somewhere in Germany (nước Đức).

→ He ________________________________________________

→ It ________________________________________________

27. People rumoured that he was involved in the bank robbery.

→ He ________________________________________________

→ It ________________________________________________

28. People think that she died in a plane crash.

→ She ________________________________________________

→ It ________________________________________________

29. People believed that the earth was the centre of the universe (vũ trụ).

→ The earth________________________________________________

→ It ________________________________________________

30. It is expected that the strike will end soon.

→ The strike ________________________________________________

They expect________________________________________________

19. It is thought that the prisoner escaped by climbing over the wall.

→ The prisoner ________________________________________________

People________________________________________________

31. It is reported that many people are homeless after the floods.

→ Many people ________________________________________________

They ________________________________________________

32. It is said that the man robbed the stone of $ 3,000 in cash.

→ The man ________________________________________________

People________________________________________________

tim số thập phân biết rằng nếu chuyển dấu phẩy của số thập phân sang bên phải một chữ số thì được số mới lớn hơn số cần tìm là 138,6

Tính giá trị biểu thức: 2000 – 777 : 21 x 33