Tế bào trứng là tế bào a.n b.2n c.3n 4.4n

Xà phòng hóa hoàn toàn 19,4g hỗn hợp e este đơn chức A và B cồn 200ml dd NAOH 1,5M. Sau khi phản ứng hoàn toàn cô cạnh dd thu được hỗn hợp 2 ancol đồng đẳng kế tiếp nhau và 1 muối khan duy nhất. Tìm CTCT của A và B Giúp em với ạ :((

y= x-1/x²-2x+4 Xét tính đơn điệu ạ

1. If I have a chance to go back to the past, I will do the right and meaningful things => 2. If Mary gave in to the argument, she would have left a good impression on her bosss heart => ( đảo ngữ câu đk)

Xét tính đơn điệu y= 4x - 5 - 1/x

1.Why do you go with them? =>Lanh asked 2. Have you ever seen the comedy"Mr Bean" =>Joe asked lee 3.How many children have you got? =>She asked me 4.How do you feel before the exam? =>She asked 5.Why does the woman call the doctor? =>She asked 6.Who is having a problem? =>She asked 7.Is a return ticket cheaper than two singles?said my aut => 8.How long have you been waiting for me? She asked us => 9. Who are you going to take the vacation next summer with? He said to Lan => 10. Can you answer these questions? They said to me => 11. Which coat do you want, the blue one or the green one, Ann?asked Jane => 12.Do you know Mary's boyfriend? She asked me => 13. Did you have the report completed last Thursday? The teacher said to him => 14. Can you remember when you last saw this man,Mr.Bown?, the detective asked => 15. I'll call you as soon as I arrive at the airport, he said to me => 16. Jason asked me, 'Are you coming with me'? => 17. Mark asked me,' why do you want to study Russian?' => 18. Chery asked her,'How long have you lived here?' =>

1. "Does she go to the cinema every Saturdays"? =>Lan asked 2. "What was the weather like yesterday?" =>Hoa asked Lien 3."How long did you stay here?" =>She asked 5."Did you make any new friend?" =>Ann asked Mr.Brown 6."Do you listen to the music on every Sundays?" =>Ann asked Joe 7."When will you have two days off?" =>John asked us 8."Do your parents let you go out at night?" =>Lan asked 9."Did you speak EL all the time?" =>She asked 10."Does he enjoy reading novels?" =>Lanh asked 12."How long has he been a professor?" =>David asked me 13."What did you asked me?" =>Marry asked 14."What did you buy at this store yeasterday morning?" Mr Hung asked Duy => 15."Did you decorate your house last year?" =>Lan asked 16."How long have they built this house?" =>My mother asked