Cho tam giác ABC nội tiếp đường tròn (O) đường kính BC (AB>AC) tiếp tuyến tại A của đường tròn cắt BC tại D .F là điểm đối xứng của A qua BC. a.Chứng minh F thuộc (O) và DF là tieps tuyến b.H là hình chiếu của A trên BC . IH=IA. BI cắt (O) tại E .K là giao điểm của AF và BC.tính góc AEK=? c.DEcawts (O) tại P chứng minh P,O ,F thẳng hàng giúp mình vs tick 5* + 1 cảm ơn + 1 câu tlhn

giúp mình vs giải pt:|2x-3|=5

Giúp mk câu 2 vs mn cả câu 5 nx

Các bạn giải giúp mình 3 câu này với

Tìm thêm chi tiết miêu tả hình ảnh Dượng Hương Thư trong cuộc vượt thác

Cho ΔABC vuông tại A , đường cao AH , ΔAHC ∞ ΔBHA , có AB=15cm , AC = 20cm , tính BC và AH

Giúp em với mn !!! ___ IV. Complete the sentences with right prepositions: __ That’s very kind ____ you to help me _____ this Math. We hope to earn some money _____our school Y & Y. What did you do _____ the ninth of April, 2002? (April 9th , 2002) Well, let’s go ____ a walk ______ the weekend. Minh has high marks ___ exam ___working very hard. Are you interested _____ studying English? When did you see him? _____ lunch today. Does it rain _____ spring? His birthday is ____ May 1st. I am different ______ my sister. I don’t know he is doing ___ the moment She was interested ____ folktales. I’ll be home ______ 7.00 because I want to see the seven o’clock news. I go to school _____ Monday ______ Saturday. We’ve not seen her _______ 2006. ____ V. Combine each pair of sentences, using ENOUGH He is intelligent: ___ 1. He can answer all the questions 2. He isn’t tall. He can’t reach the shelf 3. She is good. She’ll pass the exam 4. You aren’t well. Don’t go to school. 5. They are sociable. They can make a lot of friends 6. Don’t sit in the garden. It isn’t warm 7. He is intelligent. He can answer all the questions 8. He is good. He will pass the examination. 9. The book is small. I can put it in my pocket. 10. Those shoes are large. He can wear them _____ VI. Turn into reported speech: _____ 1. Their mother said to them, “Don’t make so much noise.” 2. The traffic policeman said, “Show me your driving license, please.” 3. Mrs. Jackson said to Tim, “Could you give me a hand, please?” 4. The lifeguard said, “Don’t swim out too far, boys.” 5. Nam said to the taxi driver, “Please turn left at the first traffic light.” 6. She said to her son, “Go straight upstairs and get into bed.” 7. The policeman said, “Don’t touch anything in the room.” 8. Mary said to John, “Can you carry my suitcase, please?” 9. The doctor said to him, “You should give up smoking.” 10. The dentist said to me, “You shouldn’t eat too much sugar.” 11. The teacher said to his students, “You should learn harder for the exam.” 12. “Please lend me your dictionary, Quang,” said Hoa. 13. “Can you help me with my homework?” Minh said to her sister. 14. “You should practise speaking English everyday,” the teacher said. 15. “You shouldn’t translate each sentence into Vietnamese,” my brother told me. 16. “Can you turn down the radio?” Miss Jackson said to Mary. 17. “ Can you explain this word to me?” Trang asked Hue. 18. Her teacher said: “You should revise the lessons carefully.” 19. “Check your answers carefully before handing in,” my father said. 20. “Don’t look out of the window,” Linh’s teacher said.

(3X-10 trên 2X+1 )- 5 <0 giải các BPT sau .

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