Tìm điều kiện ở mẫu và tử để số hữu tỉ thỏa mãn `(x+2)/(x-6)`dương `(x+2)/(x-6)`âm

Giúp em chút ạ. Giải thích ra giúp em luôn. II. CHOOSE THE BEST ANSWER 11. "Let's go to the movie now" -"Oh! ____________" A. I don't B. Why's that? C. I need it D. Good idea 12. “Hello! My name is Minh. Nice to meet you.” – “Hello! ____________” A. I’m fine B. Really? C. Good D. I’m Jane. Glad to see you. 13. Mary: “ How do you get here?” Jane: “ ______________” A. I come here by bus. B. I come here at 5p.m. C. The bus is very crowded D. It is very far from here 14. Lan: “Are you American?” – John: “__________” A. Sorry! B. Yes? C. Excuse me? D. Pardon? 15. Thanks for your help!” “________________” A. With all my heart B. Never mind me C. It’s my pleasure D. All it is for you 16.You look tired, so I_____(bring) you something to eat. 17.At 10 o’clock tomorrow, she will be in her office. She_____(work). 18. : I_____(see) you at the meeting at this time tomorrow. 19 : Anne_____(repair) her bike by next week. 20 : By the time we are fifty, our kid_____(leave) school.

Câu 1 : Ta nhìn thấy một vật khi nào? Tại sao ta không nhìn thấy các vật trong tủ khi đóng kín? Câu 2: Phát biểu định luật truyền thẳng của ánh sáng? Thông thường ánh sáng truyền đi trong không khí có truyền thẳng hay không? Vì sao?

Các bạn giải nhanh và chi tiết hộ mik ạ

Giúp em chút ạ. Choose the best answer 1. a. naked b. looked c. booked d. cooked 2. a. concerned b. raised c. developed d. maintained 3. a. appeared b. agreed c. coughed d. loved 4. a. sacrificed b. trusted c. recorded d. acted 5. a. laughed b. weighed c. helped d. missed 6. a. partnership b. romantic c. actually d. attitude 7. a. believe b. marriage c. response d. maintain 8. a. summary b. different c. physical d. decision 9. a. attractiveness b. traditional c. generation d. American 10. a. certain b. couple c. decide d. equal

Mọi người giúp mình nha, mik hơi gấp

BÀi 4: Các nước châu Á . Lớp 9 Lịch Sử Phần II Giúp mik với cần gấp!!

A Sin²x-3sinx+2=0 B. Cot²x-cotx=0

33. Choose the best answer that is rewritten to emphasize the underlined part. I really admire my teacher for her memory. A. It is my teacher who I really admire for her memory. B. It was my teacher who I really admire for her memory. C. It was my teacher that I really admire for her memory. D. It is my teacher whom I really admire for her memory. 34. Choose the best answer that is rewritten to emphasize the underlined part. My son found internet useful to his English learning. A. It was internet that my son found useful to his English learning. B. It is internet that my son found useful to his English learning. C. It was internet which my son found useful to his English learning. D. It is internet my son found useful to his English learning. 35. Choose the best answer that is rewritten to emphasize the underlined part. His best friends gave David much help. A. It is David who was given much help. B. It was David who was given much help. C. It was David that gave much help. D. It is David who gave much help. 36. Choose the best answer that has the same meaning as the given one. Doing physical activities is necessary for children. A. Children shouldn’t do physical activities. B. Children need to do physical activities. C. Children mustn’t do physical activities. D. Children had to do physical activities. 37. Choose the best answer that has the same meaning as the given one. It is good for parents to communicate with their children to improve family relationship. A. Parents don’t have to communicate with their children to improve family relationship. B. Parents shouldn’t communicate with their children to improve family relationship. C. Parents needed to communicate with their children to improve family relationship. D. Parents ought to communicate with their children to improve family relationship. 38. Choose the best answer that has the same meaning as the given one. It’s a good idea for parents to teach their children to do housework. A. Parents don’t have to teach their children to do housework. B. Parents shouldn’t teach their children to do housework. C. Parents had to teach their children to do housework. D. Parents should teach their children to do housework. 39. Choose the best answer that has the same meaning as the given one. Silence your cell phone, please. A. Cell phones mustn’t set up to be silent. B. Cell phones must set up to be silent. C. Cell phones mustn’t be set up to be silent. D. Cell phones must be set up to be silent. 40. Choose the best answer that has the same meaning as the given one. Cameras or video equipment is prohibited. A. Cameras or video equipment mustn’t be used in this area. B. Cameras or video equipment mustn’t use in this area. C. Cameras or video equipment must be used in this area. D. You can use cameras or video equipment in this area.

Mọi người giúp mk vs Mk đag cần gấp Hứa sẽ cho 5* Cảm ơn mọi người