Giải phương trình ✓x+1 -1=✓x-✓x+8

Giải với nhá.

Bài 9: Lập PTTQ và PTTS của dường thắng (d) đi qua 2 điểm A, B biết: a. A(1;-3). B(2;2) b. A(5;-1). B(-2;-4)

Cho 5,6g kim loại M hóa trị III tác dụng với Cl2 dư thì thu được 16,25 g muối . Kim loại M là ? a ) Fe b) Al c) Cr d) Mg

bạn giúp mình câu này nhé các bạn

giúp em với ạ Em cảm ơn nhiều ạ!!! Chúc ngày valentine vui vẻ

III. Choose the best option to complete each sentence. (1.5/10) 1. How do you feel today? – I feel ............... better. A. too B. fewer C. much D. a lots 2. ...............book is this, yours or mine? A. Who B. Whose C. Which D. Who's 3. There is ...............girl in the class? A. no B. not C. some D. little 4. None of the trains stop in Ha Giang. "They ...............stop in Ha Giang." A. sometimes B. never C. always D. rarely 5. There is ................oil in the bottle. We should buy some more. A. few B. a few C. a little D. many 6. Do you like pop music? A. I would B. Yes, a lot C. No, I like it D. Yes, we are 7. .................do the buses run? – Every twenty minutes. A. How often B. How far C. How much D. What time 8. What about ................a cup of coffee? A. have B. to have C. has D. having 9. On my way downtown, I ...............the noodles at a store. A. smell B. hear C. feel D. drink 10. Daisy is the ................of the two girls. A. prettiest B. more prettier C. prettier D. pretty 11. She is a very warm woman and everyone ................her. A. likes B. like C. liking D. to like 12. How many ...............are there in the store? A. a radio B. an radio C. radios D. radioes 13. Ho Chi Minh is the ................from here. A. far B. farrer C. farest D. farthest 14. It ................heavily, we can't do anything until it stops. A. rain B. rains C. is raining D. to rain 15. They like going .................at weekends. A. swim B. swimming C. swims D. to swim IV. Choose the option A, B, C, or D that needs correcting (0.5/10) 1. We live on a nice and clean house in the country. A B C D 2. Hoa's school have got twenty classrooms. A B C D 3. It is very dangerously to drive too fast. A B C D 4. Can you go to the store to buy some fruit to me? A B C D 5. I would like buying a packet of tea and a tube of toothpaste. A B C D V. Give the correct form of the words in CAPITAL to complete the sentences. (0.5/10) 1. We must be ......................when we cross the road CARE 2. A..................is working on his farm. FARM 3. My brother is a bus..................... DRIVE 4. Miss Thuy is ..................her motorbike to work. RIDE 5. Near my house there is a market. It is very..................... NOISE VI. Give the correct form of the verbs in brackets. (0.5/10) 1. How much rice your children (eat) ................every day? 2. Every evening, my father (watch)...............television.. 3. Linda (not write)...................to David at this time. 4. My parents (buy)............... a new house next month 5. Lan can (speak)...............two languages.

Giúp mình 2 bài này với ạ Bài 7:Cho góc nhọn xOy, Oz là tia phân giác của góc xOy. Trên tia Oz lấy điểm C, từ C kẻ CA Ox, CB Oy( A Ox, B Oy). a) CMR: CA = CB; b) Cho BC Ox = {D}. AC Oy = {E}. CMR: Tam giác CDE cân. c) Cho biết OC = 13cm, OA = 12cm. Tính độ dài AC? d) CMR: OC vuông góc với DE. e) Cho OC DE = {I}, xO y = 600, DE = 18 cm. Tính OI? Bài 8: Cho điểm M nằm giữa 2 điểm A và B. Trên cùng 1 nửa mặt phẳng có bờ là đường thẳng AB vẽ các tam giác đều MAC và MBD. Các tia AC và Tia BD cắt nhau tại O. Chứng minh rằng: a) Tam giác AOB đều. b) MC = OD và MD = OC; c) AD = BC; d) Gọi I và K lần lượt là trung điểm của AD và BC. CMR: Tam giác MIK đều. e) Cho AD BC = {E}, Tính góc CEA?

a)Hoa của cây 1 lá mầm thường có số cánh hoa là: b)Hoa của cây 2 lá mầm thường có số cánh hoa là:

Give the correct form of the verbs in brackets: used to + V or simple past. 1. I (not play) ................. computer games when I was a child, but now I (play) ..................a lot of games in the evening. 2. Mike (not smoke) ................................... before going to the army. 3. There (be) ................... three parks in our village, but now there (be) ...................only one. 4. Murat (like) .................................. cheeseburgers, but now he (eat) .................................. healthy food. 5. She (not cook) ................. before she got married, but now she (cook).......................... everything. 6. Alex (not have) .....................a mobile phone, but now he (send) .................. text messages easily. 7. When I was single, I (have) ................... big parties in my house, but now I (watch).................... TV in the evenings. 8. When I was in Vietnam, I (watch) ..................football matches at the stadium. Now I (watch).................... on TV every weekend. 9. A: you (drink) ........................... a glass of milk every morning when you were a child? B: Yes, I did, but now I (drink) ................................... a cup of coffee every morning. 10. My sister (love) ..................classical music, but she (hate) .................. it when she was younger. P/s: Cần Người Giúp con người ko giỏi Tiếng Anh này, HỨA VOTE 5 SAO LUÔN =((