cho hình thang ABCD hai đáy AB,CD và AC nhỏ hơn CD là 7,5cm đưởng cao 3,6cm diện tích 29,34$cm^{2}$ a)Tính độ dài mỗi đáy của hình thang b)kéo dài hai cạnh DA,CB cắt nhau tại E.Biết AD= $\frac{2}{3}$ DE.Tính diện tích hình tam giác EAB (lưu ý:để giải được bài toán ta cần phải vẽ hình để phân biệt)

Chỉ giúp em với em chuẩn bị nạp cho cô r

Bài 6: Cho hai đường thẳng (D): y = – x – 4 và (D1): y = 3x + 2 a) Xác định tọa độ giao điểm A của hai đường thẳng (D) và (D1) bằng phép toán. b) Viết phương trình đường thẳng (D2): y = ax + b (a ≠ 0) song song với đường thẳng (D) và đi qua điểm B(–2 ; 5)

Giai giup to voi Các cặp kề bù là

một hình chữ nhật có có chu vi 70cm được chia thành hai phần bởi một đoạn thẳng song song với chiều rộng sao cho phần thứ nhất là một hình vuông,phần thứ hai là một hình chữ nhật có chiều dài gấp 3 lần chiều rộng.Tìm diện tích hình chữ nhật ban đầu

Exercise 3: Changed into negative and interrogative form. 1. They used to play tennis twice a week. They didn’t use to play tennis twice a week. Did They use to play tennis twice a week? 2. I used to go to the gym three times a week. .......................................................................................................................................... .......................................................................................................................................... 3. Tennis used to be a sport for rich people only. .......................................................................................................................................... .......................................................................................................................................... 4. My father used to take me to see soccer games on Saturday. .......................................................................................................................................... .......................................................................................................................................... 5. He used to buy a new tennis racket. .......................................................................................................................................... .......................................................................................................................................... Exercise 4: Rewrite the sentences with "used to". 1. They often went to Da Lat in the summer. They used to go to Da Lat in the summer. .......................................................................................................................................... 2. We usually played soccer in the past. .......................................................................................................................................... 3. I got up earlier when I had work. .......................................................................................................................................... 4. Tom did his homework in the evening. .......................................................................................................................................... 5. Lan wrote to Mary twice a month. .......................................................................................................................................... 6. He worked at night when he worked in the supermarket. .......................................................................................................................................... 7. Did they watch TV in the past? .......................................................................................................................................... 8. She played badminton in her free time. .......................................................................................................................................... 9. They went swimming in the afternoon in 1990. .......................................................................................................................................... 10. He was a doctor in that hospital. ..........................................................................................................................................

vẽ chibi nha nl: kể tên 5 idol vẽ app mà bạn bít ik (ko phải mod nhe, bđhh cũng đc nhưng phải đẹp ak)

I. Use a relative pronoun to combine each pair of sentences below. 1. The student is from China. He sits next to me. 2. I thanked the woman. This woman had helped me. 3. The professor is excellent. I am taking his course. 4. Mr. Smith said he was too busy to speak to me. I had come to see him. 5. The man is my father. I respect his opinions most. 6. I recently went back to Paris. It is still as beautiful as a pearl. 7. I recently went back to Paris. I was born in Paris nearly 50 years ago. 8. She is the most intelligent woman. I've ever met this woman. 9. Do you know the music? It is being played on the radio. 10. That man is an artist. I don't remember the man's name. 11. One of the elephants had only one tusk. We saw these elephants at the zoo. 12. That car belongs to Dr. Clark. Its engine is very good. 13. You sent me a present. Thank you very much for it. 14. This is Mrs. Jones. Her son won the championship last year. 15. I'll introduce you the man. His support is necessary for your project. 16. Rod Lee has won an Oscar. I know his sister. 17. Is this the style of hair? Your wife wants to have it. 18. A man answered the phone. He said Tom was out. 19. Do you know the building? The windows of the building are painted green. 20. Last week I went to see the house. I used to live in it.

Giúp mình với ạ, đang cần gấp. Hứa vote cho 5 sao+cảm ơn

Tại sao has không ở thì hiện tại đơn mà sau hay lại chia động từ ở thì hiện tại đơn