Giúp em câu 6, 7, 8 với ạ

Mn dịch giúp em bài này với ạ. Lưu ý là ko dùng gg dịch

City is often described as a large and a highly populated area. However , city life is living in a large populated, technologically advanced area. According to World Health Organization, 54% of the world’s population lived in urban areas by 2014. A city is technologically more advanced and complex than the countryside. Therefore, there are many advantages in living in a city. Technology makes our lives easy in a City.Cities have many facilities like high-quality hospitals, educational institutes, banks, shops and other business institutes. This makes our life easy as we can access the facilities provided by these institutes and organizations without delay. Moreover, many employment opportunities are available in the City as many major business institutes, factories are located here. City life also gives us access to developed infrastructure facilities, like water, electricity, telecommunication and transportation facilities. However , we can also notice a difference in the behavior of the people living in the city. City dwellers tend to be busier , ambitious and distant compared to the village folk.

Đã ko làm mà còn vô chửi ng ta

Cho ΔABC vuông tại A (AC < AB), M là điểm nằm trên cạnh AC. Vẽ MD vuông góc với BC tại D. Gọi E là giao điểm của hai đường thẳng DM và AB.

a) Chứng minh ΔMDC đồng dạng ΔMAE và viết tỷ lệ số đồng dạng

b) Chứng minh góc AEM=DCM

c) Cho BC=2MC tính \(\dfrac{SABDM}{SABC}\)