Cho đa thức F(x)=ax^2+bx+c Tính giá trị của F(-2),biết 4a + c =2b+2020

Viết 1 ĐOẠN HỘI THOẠI = tiếng anh về lễ hội ở việt nam

nhiệt kế thủy ngân không dùng để đo

chứng minh rằng: A= n(n+1)(2n+1)chia hết cho 6 (n thuộc N)

1) Trong mặt phẳng tọa độ oxy cho (d) y=-3x+1 a) Vẽ ( d) b) viết phương trình đường thẳng d1 y=ax+b biết d1 song song với d đi qua M có tung độ bằng 2 c) tìm M để đường thẳng d2 y=mx-5 cắt d tại P(3;-8) 2)Cho tam giác ABC vuông tại A đường cao AH biết AB=4cm AH =2cm tính BC,AC

Tính nhanh 1-1/2-1/4-1/6-1/8-1/16-1/32-...-1/1024-1/2048

Chọn ý đúng 1, It's eight o'clock now are late ....... the meeting. A, at B, from C, for D, with 2, ......young children play this video games every day. A, thousand of B, thousand C, thousands of 3, Would you like ........ dinner with me tonight ? A, have B, has C, to have D, having 4, I don't like pork. My mother doesn't ............ A, either B, too C, so D, neith 5, She is a good swimmer. She swims .............. A, well B, good C,bad D, bedly 6, ............. did she go to the dentist last week ? – Because sha had a toothache A, what B, why C, where D, who 7, ......... is your bother ? – He is 1,70 meters. A, How tall B, How old C, How heavy D, How weight 8, Most of the world’s surface is ................ A, land B, mountati C, water D, river 9, Lan doesn’t like pork and ............ does Hoa. A, too B, either C, so D, neight 10, He ................... to the zoo last Saturday. A, goes B, went C, is going D, will go Hộ mình với mn cảm ơn mn

Chữa lỗi sai nêu nguyên nhân và chữa lỗi về chủ ngữ vị ngữ A Giữa hồ , nơi có một toà tháp cổ kính b Qua truyện ,” Dế Mèn phiêu lưu kí “ cho ta thấy dế mèn biết phục thiện c Cái bang tròn này vuông d Bạn Lan, người học giỏi nhất lớp 6A

Vẽ các bn BT21 : RJ KOOKIE CHIMMY SHOOKY TATA nhé ! Đẹp và cute ( xấu nhưng nhanh ) thì cho HAY NHẤT

Read the following passage anh mark the letter A,B,C or D on your answer sheet to indicate the correct word or phrase that best fits blank. In the United States and Canada, it is very important to (1)_____ a person directly in eyes when you are having a conversation with him or her. If you look down or to the side when the (2)_____ person is talking ,that person will think that you are not interestd in what he or she is saying .This, of couse, is not polite. If you lok down or to the side when you are talking, it (3)_____ that you are not honest. However ,people who are speaking will sometimes look away for (4)____ seconds when they are thinking or trying to find the right word. But they always turn immediately back to look the listener directly in the eyes. These social rule are (5)____ for two men, two women, a man and a woman, or an adult and a child. 1. A.look B. get C. talk D. notice 2. A. other B. others C. another D. one 3. A. seem B. come C. turn D. Become 4. A. a little B. a few C. few D. little 5. A.such as B.likely C. the same D. like Một tick cho bạn làm bài.