BÀI 3: Cho Δ ABC, trung tuyến AM. Trên cạnh AB, lấy hai điểm D, E sao cho AD=DE=BE. Gọi I là giao điểm của AM với CD. Chứng minh: AI=IM BÀI 4: Cho ΔABC và hai đường trung tuyến BD, CE cắt nhau tại G. Gọi M, N lần lượt là trung điểm của BG, CG. Chứng minh tứ giác MNDE có các cặp cạnh đối song song và bằng nhau. Help me !! ( 5 vote + CTLHN ) Nhanh tay, nhanh tay lỡ mất cơ hội ∵

ai cho em xin bí quyết làm dạng toán giải phương trình về năng suất ạ

An,Bình,Hòa được cô giáo cho một số nhãn vở.Nếu An cho Bình 6 nhãn vở,Bình lại choHòa 4 nhãn vở thì số nhãn vở của mỗi bạn đều bằng 12 cái.Hỏi lức đầu mỗi bạn có mấy nhãn vở?

Giải giúp mình (x+1)(x² - x + 1)

GIÚP :)))))))))))))))))))))))))))))

giúp em với ạ !!! (vote 5 sao) 2. The living room was lighted ____________ the bedroom. (bright) 3. It is one of ___________________ holidays we have ever had (enjoyable) 4. Time goes by _________________ we are busy. (quick) 5. Last night I was tired, so I went to bed ________________ usual (early) 6. People tend to live _______________ in the country than in the city. (happy) 7. Heath and happiness is __________________ money (important) 8. My village was _______________ affected by the floods than the next village. (bad) 9. Nick speaks English _______________ me (good) 10. She performed this song ___________________ of the three candidates. (beautiful) V. Fill in the gaps with the correct form of the words in brackets. (1m) 1. Some of my _______________ live in the rural areas (relate) 2. Nowadays, many villages in the country of Viet Nam are getting ____________ (electric) 3. Ho Chi Minh City is easily _________________ by road, rail and air. (access) 4. Well – paid jobs aren't _______________ in the country (plenty) 5. Air _______________ is a big problem in the city (pollute)

Giải phương trình: $\sqrt[]{2x^2-3x}$ + $\sqrt[]{2x^2-5x+3}$ = $\sqrt[]{2x^2-7x+6}$ cần giải thêm điều kiện xác định

Giải hệ bằng phương pháp đặt ẩn phụ;

vẽ tranh đề tài gia đình không coppy mạng nha đẹp nha

EXERCISE 1: CHUYỂN CÁC CÂU SAU SANG BỊ ĐỘNG. 1. They told me that you were the best architect in this city. 2. She reported that the flowers were killed by frost. 3. Some people inform me that the director is going to take a business trip to England. 4. That officer announced that the meeting was delayed until next week. 5. He discovered that this cotton was grown in Egypt. 6. They promise that the performance will start on time. 7. He recommends that we should stay at the city center. 8. We believed that Alice would pass the driving test. 9. The director notifies all the workers that they will have to work extra hard this month. 10. They have persuaded me that they will go with me to the stadium. 11. They have decided that the company will go to the beach together at the weekend. 12. People think that Maradona is the best football player in the 20th century. 13. They find that the job is not suitable for a girl like her. 14. The teacher explained that this powerful engine pulled the train. 15. He told me that his football team had played well last season.