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2. Cho tam giác ABC, trung tuyến AM. Gọi I là trung điểm AM, D là giao điểm của BI và AC. a) C/m AD= $\frac{1}{2}$ DC. b) So sánh độ dài BD và ID. (cả hình lun ạ)

Vẽ anime cầm bánh sinh nhật. NL:Happy birthday "Hoidap247".

giúp em hứa sẽ vote 5 sao và cảm ơn ạ😘🥰

Tìm các giá trị x nguyên để tại đó giá trị của mỗi biểu thức sau là một số nguyên: c. (x^2-x)/x-3 d. (3x^2-4x-15)/x+2

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Complete the following sentences using the cues given. 1. We/ buy/ new car/ last weekend. ............................................................................................................................................... 2. She/ not write/ her grandparents/ yet. ............................................................................................................. IX. Change into plural nouns: 1. a table -> tables 2. an egg ->………………………… 3. a car ->………………………… 4. an orange ->………………………… 5. a house ->………………………… 6. a student -> ………………………… 7. a class ->………………………… 8. a box ->………………………… 9. a watch ->………………………… 10. a dish ->………………………… 11. a quiz ->………………………… 12. a tomato ->………………………… 13. a leaf ->………………………… 14. a wife ->………………………… 15. a country ->………………………… 16. a key ->………………………… 17. a policeman ->………………………… 18. a bamboo ->………………………… 19. an ox -> ………………………… 20. a child ->………………………… 21. a tooth ->………………………… 22. a goose ->…………………………

Cho tam giác ABC vuông cân tại A có AB=10cm . Tính chu vi và diện tích tam giác ABC

VI.Rewrite these sentences, using the words in brackets. 1. The painting is bigger than the photograph.( not as……as) ………………………………………………………………. 2. This painting is more expensive than my painting.( not as……..as) ………………………………………………………………. 3. This picture is the same as the picture in our room. ( not different from) ……………………………………………………………….. 4. This film is more interesting than the one we saw last week. (not as………as) ……………………………………………………………….. 5. The journey was shorter than we thought at first.( not as……….as) ………………………………………………………………….. 6. I haven’t mer my family since last Christmas.( MET) ________________________________________________________________. 7. The children haven’t had a long vacation since last year.( LAST TIME) ____________________________________________________________________. 8. They haven’t visited their parents for 3 months.( VISITED) ____________________________________________________________________.

4. Most email accounts at my company ___________ by virus two days ago. a. affected b. were affected c. was affected d. are affected 6. Look at this beautiful lace! Where ___________? a. was it made b. does it make c. did it make d. is it made 7. The school ___________ two examinations every year. a. holds b. held c. is held d. was held