cho hình chữ nhật ABCD biết AB=36, AD=24. gọi E là trung điểm AB, đường thẳng DE cắt AC tại F và cắt CB kéo dài tại I a, tính BE, DI, DF b c/m với các độ dài trên thì DF ²=IF.EF c cmr hệ thức trên cũng được nghiệm đúng của bất cứ vị trí nào của E trên AB Vẽ hình giúp mình luôn ạ

1.giải pt (x² + 2x +4)(x - 1) < 0 2.giải bất pt a.|x + 2|=2( 3 - x ) b.|3x - 2| + x=11 c.|-2x + 10| - 3x + 5=0 d.|x² - 2x + 4| - |2x + 5| -7=0

Trên cùng một nửa mặt phẳng bờ Oy vẽ hai tia Om,On sao cho yOm∆ =70° yOn∆=140° a)tính mOn∆ b) tia Om có là tia phân giác của góc yOn∆ không vì sao

Today, city is the trend of living place of almost people in every country. And the government also want to build more city in their country. As the result, project of urbanization always attracts company and government to invest. But every field has two side of it. Living in big city isn't always good. Today I will talk to you about the advantages and disadvantages that have in big city. First of all, the economy will be raise if your country has more and more city. It is always true. The big city will be a place to improve the industry and service. There are a lot of works in big city. You can be a doctor, a engineer, a nurse, … That’s why many people from countryside want to move to big city to earn more money. In big city,there are many intellectual works and it will attract many smart people move to here to live and work. And the trend of works on global now is intellectual works so that's why the big city always has a large economy. So as the result, big city will have many services like healthcare, education, drinking, … About healthcare, big city always has good healthcare. Why ? Because there are many good doctors from all country. And what thing is attracted they ? Yes it is a good salary because big city has a lot of money to spend to healthcare. So many good doctors come to big city to have a good salary. But it isn't just doctor from other place, in that city have a lot of doctor. And how ? They will make it by building a lot of university in big city and try to make education better. You should remember they have much money and they will spend a lot of in education. There are many big city in world have good education such as Cambridge, Massachusetts with Harvard University – the best university in the world, Oxford, England with Oxford University, New Haven, Connecticut with Yale University,… Many companies want to invest to build a big university in big city for children from rich family to learn. They will be taught in famous university with good infranstructure and learnt from famous professor from all over the world. The young kids can have many exercises for improving creation, improving thinking. They will be able to learn the best things for them. So the education in big city is very good and it will be more and more growth in the future. So everyone thinks that living in city is better than countryside. But in other hand, big city has a lot of problems. First, if you live in big city, you will know that the air is very polluted. I really sure that you have heard this once in television. The air is heavily polluted with many dust in air. The reason is big city very lean on industry especially machinery manufacturing industry, textile industry, … So factories must be built to provide place to work those industry. But factories release a lot of carbon dioxide so the air in big city is very very polluted such as Beijing, Tehran, New Delhi, … In some big city, government encourage people go out at least as much as possible. I know in some modern big city people build many park, lakes and also modern system to stop the carbon dioxide at least. But it is just a very little in many big cities in the world there are a lot of polluting air. Second, the big city has a lot of slums especially New Delhi. Why ? Because in big city has many poor people. Ok I know you will say: " What do you means ? You say that big city has so large economy Why there are poor people ?" I must say to you that in big city there are a lot of social classes from poor to rich. It is so diverse. So rich people live in skycrapers, large villas or modern flats. And poor people live in a slum. Because they don’t have place to go. 'Cause big city is overcrowded so they don’t have place to live. And last but not least, big city has a lot of crimes. Crimes find that they can make a lot of money in big city. Because they have a lot of money so they will be able to buy their services such as drugs, killing,… So crimes work very usually in big cities. In conclusion, not just in big city wherever we live has its advantages and disadvantages. So we need to know its advantages and disadvantages to live most comfortable for yourself. Goodbye and see you next time ! Các bạn sửa bài hộ mình nhá !

Viết một đoạn văn ngắn nói lên cảm xúc của em về môi trường và thiên nhiên sau chuyến tham quan du lịch , k chép mạng nha

Giúp mình giải tự luận chi tiết 4 câu này với ạ <3

Tính tuổi Mai và tuổi bố Mai hiện nay, biết bốn năm trước bố gấp 5 lần tuổi Mai và ba năm nữa tuổi bố gấp 3 lần tuổi Mai. Giúp mik vs mn ơi Mik đang cần gấp

Hai ô tô khởi hành cùng một lúc đi từ A đến B cách nhau khoảng 300km. Ô tô thứ nhất mỗi giờ chạy nhanh hơn ô tô thứ hai 10km nên đến B sớm hơn ô tô thứ hai 1 giờ. Tính vận tốc mỗi xe ô tô.

Viết đoạn văn về Tràng an, tam cốc bằng tiếng anh

Despite his ability to do the job, he was not offered the position -> although He had worked very hard but he failed -> even though That man used to work with me when i lived in new york -> that is the man