Bài 1: Quãng đường AB dài 84,48 km , cùng 1 lúc có 1 ôt ô đi từ A đến B và một xe máy đi từ B đến A . Sau 48 phút 2 xe gặp nhau . Ôt ô đi nhanh gấp 2 lần xe máy . Tính vận tốc mỗi xe ? Bài 2 : Một người đi xe máy từ A lúc 7 giờ 45 phút để đến B . Sau khi đi được 1 giờ 15 phút thì người đó nghỉ 1/2 giờ rồi nghỉ tiếp 25 phút nữa thì đến B . Hỏi người đó đến B lúc mấy giờ? Bài 5 : Tính bằng cách thuận tiện nhất 0,1 : 3 + 0,2: 3 + 0,3 : 3 + 0,4 : 3 + 0,5 : 3 = = = Bài 6: tìm x a ) 1,2:x+2,3 :x = 0,4 b) 9:x-5,43:x=3,5

Cho AOB nhọn.Vẽ góc BOC kề bù với góc AOB ,AOD kề bù với góc AOB a; Chứng tỏ góc AOB và góc COD đối đỉnh b;Tia OM là tia phân giác của AOB.Tia ON là tia đối của tia OM .Tia ON có là tia phân giác của gocsCOD không ? mong mọi người giúp Mình cảm ơn!

đặt câu cho thành ngữ dùng biện pháp nói quá sau dời non lấp biển, lấp biển vá trời, mình đồng da sắt, nghĩ nát óc Ko lấy trên mạng ạ Cảm ơn mọi người rất nhiều

x+(x+1)+(x+2)+ ...+(x+99)=5450 hep

tranh này quá đẹp rồi mọi người ơi!vậy mà có đứa kêu mik cắp haizzz ỷ ăn hiếp tui! Vẽ mầm tức

Tính : 1) sin 27 - cos 63 2) $\frac{tan 31 . tan 59}{cot 16 . cot 74}$ 3) sin 15 + sin 20 - cos 70 - cos 75

Trả lời câu hỏi dưới Mỗi câu hỏi phải dài khoảng 4 - 5 câu 1. Do you come from a large family? 2. Is there anything you usually do together with your family? 3. How often do you see your grandparents? 4. Who do you the most in your family?

3) Chọn dạng đúng của động từ để hoàn thành câu: 1. His mother is going to ____________ shopping tomorrow morning. ( go / goes ) 2. They are going to ________ TV this evening. ( watch / watches ) 3. I am going to __________ blindman’s buff tomorrow. ( play / plays ) 4. We are going to __________ to music tonight. ( listen / listens ) 5. She is going to ____________ Math next Monday ? ( have / has ) 6. _______her sister going to talk in class next time ? ( Is / Am ) 7. __________ they going to play marbles tomorrow ? ( Are / Is ) 8. Is her mother going to _______the clothes tonight ? ( wash / washes ) 9. Mr Tuan is going to _________ in that factory next month. ( work / works ) 10. My teacher is going to _________his bike to school next week. ( ride / rides )

chuyên đề thức giả định:( giúp mình vs mình đang cần gấp ạ) cảm ơn mng trc ạ câu1:My friend won't lend me his car. I wish . A:he lent me his car. B:he didn't lend me his car. C:he would lend me his car. D:he will lend me his car. cau2:my mother is not free today.I wish . A:my mother is free today. B:my mother won't be busy today. C:I had some money on me. D:I had got no money on me. cau3:I'm sorry I haven't got any monay on me.I wish . A:I have got no money on me. B:I have some money on me. C:I had some money on me.D:I had got no money on me. cau4:I'm afraid our team will lose the game today.I wish . A:our team won the game today. B:our team would win the game today. C:oue team didn't lose the game today. D:our team had won the game today. cau5:my friends didn't take part in the game.I wish . A:my friends took part in the game. B:my friends had taken partin the game. C:my friends would take part in the game. D:my friends did take part in the game. cau6:It wasn't fine yesterday.I wish . A:it was fine yesterday. B:it would fine yesterday. C:it will fine yesterday. D:it had been fine yesterday. cau7:Mrs white always talks to her baby as though he an adult. A:is. B:were. C:had been. D:will be. cau8:when he came out of the room, he looked he had seen aghots. A:as. B:as though. C:when. D:if. cau9: susan's doctor insists for a few days. A:that she is resting. B:her resting . C:that she rest. D:her to rest. cau10:the doctor suggested that his patient . A:stop smoking. B:stops smoking. C:stoped smoking. D:to stop smoking. cau11:Lan didn't apply for the job in the library.she regretsit nơ. A:Lan wishes she had applied for the job in the library. B:Lan wishes she hadn't applied for the job in the library. C:Lan wishes she would apply for the job in the library. D:Lan wishes she applies for the job in the library. cau12:Maria says she'd like to have been put in a higher class. A:Maria wishes that she will be put in a higher class. B:Maria wishes that she is put in a higher class. C:Maria wishes that she had been put in a higher class. D:Maria wishes that she were put in a higher class. cau13:he broke up with up with her but now he thinks that was a mistake. A:he wishes he hadn't broken up with her. B:he wishes not to have broken her up. C:he regrets having not broken up with her. D:he was mistaken with breaking up with her. cau14:I regret not going to the airport to see her off. A:I wish I had gone to the airport to see heroff. B:If only I would go to the ariport to see her off. C:I regret to go to the ariport to see her off. D:If I were you,I would go to the airport to see her off. cau15:It's such a pity my mother can't attend my birthday party. A:If only my mother could attend my birthday party. B:If only my mother had attended my birthday party. C:I am very sorry that my mother didn't attend my brithday party. D:I wonder why my mother can't attend my brithday party. cau16:It is a pity that I can't speak english as native spraker. A:I wish I could speak english as a native speaker. B:I wish I couldn't speak english as a native speaker. C:I wish I can speak english as a native speaker. D::I wish I have spoken english as a native speaker. cau17: his parents are away on holiday.He really needs their help now. A:as long as his parents are at home, they will be able to help him. B: he wishes his parents are at home and could help him now. C:If his parents are at home, they can help him now. D:If only his parents had been at home and could have helped him.

m,n ơi làm ơn giúp em vs đg cần gấp ạ