(a.b-2).(b+5)=6 tìm các số nguyên a và b (a.b-1).(b+7)=8 mn ơi giúp câu này vs

Cho hàm số y=1/2x ² ; y=x ² ; y=2x ² Với mỗi hàm số trên hãy tìm giá trị của x để hàm số đó có GTNN

Làm hộ mình phần a, c và e với ạ Giải đầy đủ ạ

Part 4: QUESTIONS 16-23: Read the information about Schnauzer dogs. Choose the best word (A, B or C) for each space (16-23). For questions 16-23, mark A, B or C on the answer sheet. Schnauzer Dogs There are three sizes (0) ………… Schnauzer dog. The two smaller sizes first (16)………….. to England over 50 years ago, but the Giant Schnauzer has not (17)…………. here very long. The name Giant is a good one because the dogs are 65 to 67.5 cm high. All the dogs (18)…………. long hair, which shoukd be cut quite often. Most smaller Schnauzers (19)…………… grey in colour, (20)………….. the Giant Schnauzer is usually black. Schnauzers come from Germany, where farmers use the dogs to help (21)…………… with their sheep, and they are also used (22)………….. the police, because Schnauzer dogs are very intelligent. A Schnauzer makes (23)…………… nice family dog. It is friendly and very good with young children. 0. A. with B. of C. in 16. A. came B. come C. comes 17. A. being B. be C. been 18. A. has B. have C. had 19. A. were B. is C. are 20. A. or B. if C. but 21. A. them B. him C. us 22. A. from B. by C. to 23. A. the B. a C. any PART 5 : QUESTIONS 24-33: Complete this letter. Write ONE word for each space (24-33). For questions 24-33, write your words on the answer sheet. 28 Long Road Brighton 22nd March Dear Pat, I arrived (Example : here) three weeks ago. I’m studying at a language school (24)……… Brighton. The students come (25)…..……… many diffirent countries and I (26)…….……… made a lot of new friends. There (27)……………. classes for five hours every day. I like (28)…..……… teacher very much. (29)……………. name is John and he helps me (30)…..……….. I make mistake. I want (31)..……….. visit London next weekend because I (32)….………. going Bck to my country on Monday. Can I see you there ? Please write to (33)…..……….. soon. With best wishes from Maria giúp mik vs mik thực sự đang cần gấp tối phải nộp rồi ai nhanh mik cho huy chương PART 1: QUESTIONS 1-5: Which notice (A-H) says this (1-5)? For questions 1-5, mark the correct letter A-H on the answer sheet. 0. We can answer your questions 1. You can’t drive this way. 2. Children do not have to pay. 3. You can shop here six days a week. 4. Be careful when you stand up. 5. We work quickly. A. Adults 2.50 $. Under 12s FREE. B. Shoes repaired while you wait. C. MIND YOUR HEAD. D. Open 24 hours a day. E. INFORMATION F. Police Notice Road Closed. G. Open daily 10-6 (except Mondays) H. WAITING ROOM 0 – E 1 - 2 - 3 - 4 - 5 - please mn

Giải hộ em bài 4 câu b với ạ Em cảm ơn

giải giùm mình đi làm ơn Bài 1: Cặp chất nào sau đây xảy ra phản ứng hóa học: a. Flo và hiđro b. Clo và oxi c. Lưu huỳnh và hiđro d. Đồng và clo e. Cacbon oxit và nước g. Magie và lưu huỳnh Bài 2: Hãy chọn các hóa chất sau: HCl, CO2, CO, Cl2, H2O điền vào chỗ trống thích hợp và hoàn thành phương trình phản ứng sau: a. MnO2 + ….. MnCl2 + ….. + H2O b. Mg + ….. MgO + C c. Fe3O4 + ….. Fe + ….. d. CaCO3 + ….. CaCl2 + ….. + H2O e. NaOH + …… NaCl + ….. + H2O g. NaOH + …... NaCl + NaClO + …..

cho hình chóp S.ABCD có đáy ABCD là hình thang đáy lớn là AD và AD=2BC, AC giao với BD tại o. Gọi M là trung điểm với SD, G là trọng tâm tam giác SCD. a. xác định giao tuyến của mặt phẳng (BOG) và mặt phẳng (SBC) b. chứng minh OG song song với mặt phẳng (SBC) c. Xác định thiết diện của hình chóp với mặt phẳng |(BCG). thiết diện hình là gì? Mình cảm ơn ạ :3

what time is it là gì ? dịch nghĩa nha

F. CORRECTION I. Choose the underlined word or phrase (A, B, C or D) that needs correcting. 1. If a drop of oil is placed in a glass of water, it would float to the top. A B C D 2. The Tuoi Tre is a daily newspaper that is wide read by both teenagers and adults. A B C D 3. My parents wouldn’t let me staying up late when I was a child. A B C D 4. Her children are used to picking up after school every day. They don’t have to walk home. A B C D 5. I’m usually right about the weather, amn’t I? A B C D 6. Could I change seats with you? I’d like sitting next to my friends. A B C D 7. Watch television to the exclusion of all other activities is not a healthy habit for a growing child. A B C D 8. Hans is only fourteen, but he seems enough old to stay out until ten. A B C D 9. I think that’s an interesting thought, isn’t that? A B C D 10. Greeting enough sleep is important in order not fall asleep is class. A B C D 1. The bad weather didn’t make my flight be delayed, but the terrorism does. A B C D 12. Kevin had took home lots of nice souvenirs last time, so he didn’t buy anymore. A B C D 13. A tour guide was showing the tourists around when a something fell down from the sky. A B C D 14. If you decide to start the trip, you must reserve a seat in advance on planes or trains. A B C D 15. I bet you will never have the nerve to start an expedition to an Amazon rainforest. A B C D 16. My trip to the countryside was fantastic. The locals were extremely welcome. A B C D 17. Did you have a chance to do any sightsee? A B C D 18. I find it absolutely astonished that you didn’t like Paris. A B C D 19. You’re a third person to ask me about the trip. A B C D 20. When he was ten, he taught himself to play a violin. A B C D

Cuộc kháng chiến chống quân Lương xâm lược đã diễn ra như thế nào? Vì sao Triệu Quang Phục lại đánh bại được quân Lương, giành lại độc lập cho đất nước