Cho 500ml dung dịch chứa 4,25g AgNO3 vào 500ml dung dịch HCl M. Tính nồng độ các chât thu được sau phản ứng.

Cho tam giác ABC cân tại A và hai đường trung tuyến BM, CN cắt nhau tại K a) Chứng minh tam giác BNC = tam giác CMB b) Chứng minh tam giác BKC cân tại K c) Chứng minh BC < 4.KM

Cho tam giác ABC vuông tại A; cạnh AB = cạnh AC, H là trung điểm của BC a, CM :tam giác AHB = tam giác AHC. b, CM :ah vuông góc với BC. c, Trên tia đối của tia AH lấy điểm E sao cho AE=BC, trên tia đối của tia CA lấy F sao cho CF=AB. Chứng minh BE=BF. d, Tính số đo góc EBF. (Các bạn trả lời giúp mik mik sẽ votes và cảm ơn đầy đủ nha!:>>>)

Tìm x,y thuộc Z biết: a) xy=-14 b)(x+2xy+1)=-5 mong mn giúp đỡ e thực sự đang cần gấp lắm

Mọi người giải giúp mình vài câu với

Hãy thuyết minh về 1 loại hình nghệ thuật mà em biết.

Exercise 11. Combine into one sentence with “too” or “either”. 1. They can play table tennis. We can play table tennis. 2. He sings love songs very well. His sister sings love songs very well. 3. I write diary every night. My mother writes diary every night. 4. My father doesn’t drink beer. My mother doesn’t drink beer. 5. She is swimming in the pool. Her children are swimming in the pool. 6. Hoa ate bread with milk for breakfast. Hoa’s uncle ate bread with milk for breakfast. 7. She didn’t watch TV last night. Her husband didn’t watch TV last night. 8. They mustn’t stay up late. Their friends mustn’t stay up late. 9. Milk is good for your health. Fruit juice is good for your health. 10. Betty does morning exercise. Betty’s aunt does morning exercise.

Hãy giúp mình với mình sẽ cảm ơn các bạn .mk đang cần gấp

Hãy thuyết minh về 1 Di sản Văn hóa phi vật thể (cấp quốc gia hoặc thế giới) mà em biết.

Four-time Olympic gold medalist Mo Farah is under the spotlight for injections he received ahead of the London Marathon in 2014. An investigation by BBC's Panorama, entitled "Mo Farah and the Salazar Scandal," raises renewed questions over Farah's relationship with former coach Alberto Salazar, who is appealing against a four-year ban for doping violations which he denies. Farah was tested six days after receiving the injections. He recorded a number of medicines but failed to note L-carnitine on his doping control form, according to the Panorama investigation. When drug tested, athletes are required to note all the medicines and supplements they have taken within the past seven days. The program also alleged that Farah repeatedly denied taking L-carnitine injections ahead of the London Marathon when questioned by US Anti-Doping Agency (USADA) officials in 2015, only to return minutes after the interview had concluded to say he did in fact receive the injections. L-carnitine is a naturally occurring amino acid that enhances athletic performance. It is prohibited to have infusions of more than 50ml in the space of six hours. Farah changed his account after speaking with UK Athletics' (UKA) head of endurance Barry Fudge, who had been interviewed by USADA the previous day, according to Panorama. Farah then immediately returned to the USADA officials he had just been interviewed by to clarify that he had received injections. dich ra nhe