2 ô tô khởi hành cùng 1 lúc theo hướng ngược nhau biết rằng để đi hết quãng đường AB xe thứ nhất phải đi trong 6 giờ xe thứ hai phải đi trong 9 giờ. Hỏi 2 xe gặp nhau bao lâu kể từ khi khởi hành

giải bài 1 giúp mik đang cần gấp

Giúp em câu 3b với ạ. Kiểu gen là Bd/bd Ee nhé ạ. Em cảm ơn mn nhiều

Choose the word or phrase (A, B, C or D) that is CLOSEST in meaning to the underlined part in each of the following sentences. 21. The cotton gin was commonplace on many nineteenth century farms. ( gạch chân commonplace ) A. often required B. sorely needed C. frequently seen D. visibly absent 22. In the field of artificial intelligence, scientists study methods for developing computer programs that display aspects of intelligent behavior. ( gạch chân display ) A. exhibit B. classify C. depend on D. conform to 23. She lost her temper with a customer and shouted at him. ( gạch chân lost her temper ) A. had a temperature B. kept her temper C. became very angry D. felt worried Mark the letter A, B, C, or D on your answer sheet to indicate the word or phrase that is OPPOSITE in meaning to the underlined part in each of the following questions. 24. Doctors have been criticized for their indiscriminate use of antibiotics. ( gạch chân indiscriminate ) A. disciplined B. selective C. wholesale D. unconscious 25. Slavery was abolished in the US in the 19th century. ( gạch chân abolished ) A. instituted B. eradicated C. eliminated D. required * không cần gấp nhưng cần giải thích chi tiết ạ, thanks <3

Cho ` ΔABC`, `I` là trung điểm của `AB` , `E` thuộc cạnh `BC` sao cho `BE=3EC` . Xác định điểm M thõa mãn (vecto hết nháa) : `2MA+3MB-MC=O` Nhớ giúp em là phần `2MA+3MB-MC=O` có dấu mũi tên bên trên đầu nha :>

helpmeprohelpmeprohelpmeprohelpmeprohelpmepro

Các bạn cố gắng làm nhanh giúp mình nhé mình hứa sẽ vote cho 5 sao và ctlhn ạ

0. They get me to repair roof in case it may rain heavily. They have ______________________________________________. 1. "Why don't you buy a new coat?" – Mary said to her husband. Mary suggested __________________________________________. 2. The deadline for the receipt of complete application forms is 3. 00p. m on Friday, 18th December. Complete application_______________________________________. 3. "You can do what you want on Sunday?", Mrs. Brown said. Mrs. Brown let them________________________________________. 4. I wouldn’t object to moving to a larger flat. I’ d rather_________________________________________________. 5. Don’t ask him about the accident, he is upset already. Don’t ask him___________________________________ state already.

The average lifespan of the Japanese is 78 for males and 85 for females, the (31) …………. in the world. The main secret (32) ………….. in their food. They eat a lot of tofu, which is made from soybeans. Tofu contains a lot of vegetable protein, calcium and vitamin B. It doesn’t (33) ……….. much fat, and it doesn’t provide many calories.Seafood like fish and vegetables (34)…. an important role in their diet, too. They cook the seafood with less cooking oil and less time. For each meal, they have more dishes on the table than us but eat only a little of everything, never stuffing themselves.apanese people also work very hard and do (35) …..... exercise. This help them burn the calories off easily. 31.A. longest B. longer C. long D. much long 32.A. lie B. lies C. lying D. to lie 33.A. contains B. containing C. contain D . contained 34.A. gives B plays C helps D. have 35.A. less B. more C. many D. a lot

a) (x^2 - 6x)^2 - 2(x - 3)^2 = 81 b)2x^2 - 7x + 6 = 0