Chia ra 3 phần mở - thân - kết, tìm câu chủ đề . From the evidence of developing countries all over the world, it seems inevitable that economic growth is generated in the business and industrial centers of the major cities. As a result, urban citizens have access to jobs and facilities that improve their living standards considerably. However, it is usually the case that these are not equally enjoyed by people in the countryside and this generates several problems for the countries concerned. First of all, people from the countryside will try to move to the cities to get more employment opportunities and better access to facilities available there. However, this increase in the urban population puts great pressure on housing and services, and leads to the creation of massive slum areas where conditions may be lower than standards in the rural villages which are often left under populated. This can impact food production and can have severe affects for people in both urban and rural areas. Finally, as a country’s economy develops, there may be an increasing sense of inequality as the towns get richer and the villages get poorer, and this may lead to more crime and even civil unrest. The key to reducing these problems seems to lie in improving the standard of living and the facilities available in the countryside. Perhaps incentives can be offered to factories and companies to relocate; road and rail networks can be built to make such relocation possible; doctors and teachers could be required to spend part of their professional lives in rural areas. In conclusion, however, improving rural living standards requires investment and political will that is sometimes not easy to generate.

cho pt (4m^2-25)x=x-5=2m,a)giải pt với m=5, b) tìm m để x là nghiệm của pt

giả sử a,b,c,x,y,z là các số thực khác 0 thỏa mãn: $\frac{a}{x}$ + $\frac{b}{y}$ + $\frac{c}{z}$ =0 và $\frac{x}{a}$ + $\frac{y}{b}$ +$\frac{z}{c}$ =1 CMR $\frac{x^2}{a^2}$ + $\frac{y^2}{b^2}$ + $\frac{z^2}{c^2}$ =1 các bạn giúp mình với ạ

ví dụ có cả động năng và thế năng

Cho h.thang ABCD(AB//CD)có AB=7,5cm;CD=12cm.Gọi M là trung điểm của CD,E là giao điểm của Ma và BD,F là giao điểm của MB và AC. a)Cm:EF//DC b)Tính EF Giúp mình với,cả hình nha,mình sẽ Vote đủ

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tính thành phần phần trăm theo khối lượng của các nguyên tố có trong các hợp chất sau : a, Kalisunfat K2SO4 b, Nhôm nitrat Al(NO3)3 c, Kẽm hidroxit Zn(OH)2 d, Natri cacbonat Na2CO3

Một hình tam giác có diện tích là 180 cm . Chiều cao của tam giác là 30cm. Cạnh đáy tương ứng với chiều cao của tam giác là :

2. Hoàn thành các câu sau 1. European drivers find it difficult to _______________________ (drive) on the left when they visit Britain. 2. See that building there? I _______________________ (go) to school there, but now it's a factory. 3. I've only been at this company a couple of months. I _______________________ (still not) how they do things round here. 4. When I first arrived in this neighbourhood, I _______________________ (live) in a house. I had always lived in apartment buildings. 5. Working till 10pm isn't a problem. I _______________________ (finish) late. I did it in my last job too. 6. I can't believe they are going to build an airport just two miles from our new house! I will _______________________ (never) all that noise! What a nightmare. 7. His father _______________________ (smoke) twenty cigars a day - now he doesn't smoke at all! 8. Whenever all my friends went to discos, I _______________________ (never go) with them, but now I enjoy it. 9. I _______________________ (drive) as I have had my driving licence almost a year now. When Max went to live in Italy, he _______________________ (live) there very quickly. He's a very open minded person. đây nữa ạ.Cảm ơn mọi người nhiều

Cho tam giác cân ABC(AB=AC).Vẽ các đường pg BD và CE a)CM:BD=CE b)CM:ED//BC c)Biết AB=Ac=6cm;BC=4cm;Hãy tính AD,DC,ED giúp mình bài này với,hứa sẽ Vote đủ