cho điểm P nằm trong tam giác ABC,AP kéo dài cắt BC tại M,BP kéo dài cắt AC tại N,CP cắt AB tại E.cmr: PM/AM+PN/BN+PE/CE=1

một toa tàu cần chở 192 khách tham quan. biết rằng mỗi toa có 10 khoang. mỗi khoang có 4 chỗ ngồi. hỏi cần mấy toa để chở hết số khách tham quan?

Tìm thương A. aaa : a B. abab : ab

Mọi người giúp em bài này vs ạ ! Em đg cần gấp ạ ! Em cảm ơn

Hãy trình bày về nguyên lý hoạt động của bếp từ? Dựa trên kiến thức về hiện tượng tự cảm.

So sánh thơ trữ tình và truyện ngắn trên các phương diện : -đối tượng -nội dung -hình tượng -ngôn ngữ (Đây là câu hỏi dành cho nâng cao cho ngữ văn )

Môm lý: một vật được ném thẳng đứng xuống đất từ độ cao 175m với vận tốc ném có độ lớn v1 = 20m/s. bỏ qua sức cản của không khí, hãy tính tốc độ vật khi chạm đất, cho g= 10m/s2. Xin nhờ giải giúp

(x-1/x+2 )^2 -4(x^2-1/x^2-2)+3(x+1/x-2)^2=0 giải pt giúp mk nhé

1.People say that children are afraid of ghosts It was said that children are afraid of ghosts. It is said that children are afraid of ghosts. It was said that children were afraid of ghosts. It is said that children were afraid of ghosts. 2.People say that this orchestra is the best in the world This orchestra is said to be the best in the world. This orchestra was said to be the best in the world. It is said that this orchestra was the best in the world. It was said that this orchestra was the best in the world. 3.They think that he will be attending the meeting. He was thought to be attending the meeting. He is thought to be attended the meeting. He is thought to be attending the meeting. It is said that he is attending the meeting. 4.People say that this team played well in the match. This team is said to played well in the match This team is said to have played well in the match It is said that this team will play well in the match. It was said that this team would play well in the match. 5.Mum says that I didn’t have any dangerous diseases in the past. I was said not to have had any dangerous diseases in the past. It was said that I didn’t have any dangerous diseases in the past. I was said not to have had any dangerous diseases in the past. I am said not to have had any dangerous diseases in the past. 6.People believed that Anna stole the money. Anna was believed to have stolen the money Anna is believed to have stolen the money It is believed that Anna stole the money. It was believed that Anna steals the money. 7.They claim that we remember things we hear in our sleep. It was claimed that we remember things we hear in our sleep. It was claimed that we remembered things we hear in our sleep. We are claimed to remember things we hear in our sleep. We were claimed to remember things we hear in our sleep. 8.Experts have proved that exercise is good for concentration. It is proved that that exercise is good for concentration. It has been proved that that exercise is good for concentration. Excercise is proved to be good for concentration. Excercise was proved to be good for concentration. 9.The doctor said that you didn't do daily exercises. You were said not to have done daily exercises. You were said not to do daily exercises. It is said that you didn't do daily exercises. It was said that you don't do daily exercises. 10.The students say that the exam was easy. The exam is said to be easy. The exam is said to have been easy. It is said that the exam is easy. It was said that the exam is easy. 11.It seems that someone cleaned the office on Tuesday. --> The office is seemed to_________________ on Tuesday. Enter your answer 12.Amy thinks that someone is staring at her son --> Anna's son is thought to _________________ Enter your answer 13.Someone reported that many people are homeless after he floods. --> Many people (report)_______________to be homeless after he floods. Enter your answer 14.People say that he has been in the army for ages. --> He is said to ____________________in the army for ages. Enter your answer 15.I think that someone built the house in 1814. --> The house is thought to _________________ in 1814. Enter your answer 16.Everybody thinks that he is living in the US now. --> He is thought ________________________in the US now. Enter your answer 17.We imagined that the storm damaged the car. -->The car was imagined to ___________________by the storm. Enter your answer 18.I believe that someone is preparing food. -->The food is believed to ____________________. Enter your answer 19.They claim that someone stole the money. -->The money is claimed to ______________ Enter your answer 20.People believe that 13 is an unlucky number. --> 13 is believed _________________an unlucky number. Enter your answer 21.They say that fish is good for the brain. --> Fish_________________________________ Enter your answer 22.People know that the sun shines itself. --> It__________________________________ Enter your answer 23.The students said that the exercise wasn’t easy. --> The exercise ____________________________________ Enter your answer 24.The teacher believes that students in this class don't study well. --> Children in this class______________________________ Enter your answer 25.Experts thought that the weather would be cool soon. --> It__________________________________ Enter your answer 26.It was known that the man was telling the truth. --> People_____________________________ Enter your answer 27.It is believed that the thieves have left the country. --> People_____________________________ Enter your answer 28.It is believed that learning languages improves your decision-making skills --> Scientists ____________________________________ Enter your answer 29.They think that the boys didn’t arrive on time. --> The boys______ 30. People say that the exams are adisastrous. --> The exams_____________________________________

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