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Lan Linh
Lớp 8 Toán học
· 13:39 31/08/2021
Thực hiện phép tính x^2+2x-3 phần x^2+3x-10 : x^2+7x+12 phần x^2-9x+14
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nhật vũ nguyễn
Lớp 9 Tiếng anh
· 13:43 31/08/2021
87. It is three years since I last spoke to her. I 88. Lan hasn't been in Vinh city since last month. The last 89. We haven't played soccer since 2008. The last 90. Ba's not come to my house for 2 months. It's 91. We have never seen him before. This is the first time 92. I have never read stories for five years. It's 93. Nam has not eaten any ice-creams since last summer. The last time
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Linh Đann
Lớp 8 Vật Lý
· 13:38 31/08/2021
1 ống nhỏ hình trụ có chiều cao 100 cm chứa thuỷ ngân,mực thuỷ ngân cách miệng ấm 94cm a, tìm áp suất của thuỷ ngân tác dụng lên đáy ống b, Nếu thay thuỷ ngân bằng nước thì có thể tạo được áp suất như trên không? c,câu hỏi như trên nếu thay thuỷ ngân bằng rượu .Biết KLR của thuỷ ngân,nước và rượu lần lượt là D1=13,6g/cm3,D2=1g/cm3,D3=0,75g/cm3
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Lan Linh
Lớp 8 Toán học
· 13:41 31/08/2021
Thực hiện phép tính 4a+6b phần a-1 : 4a^2+12ab+9b^2 phần 1-a^3
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nhật vũ nguyễn
Lớp 9 Tiếng anh
· 13:31 31/08/2021
58. My mother was the most warm-hearted person I've ever known. I have 59. I haven't been able to see them for over a year. It is 60. It stared to rain at 2 o'clock. It has 61. I have never been to the ballet before. It is 62. John and Mary moved to Edinburgh twenty years ago .It is 63. The police started looking for him two months ago.For two months now the 64. I have never seen a dirtier-looking dog. This is
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long baby
Lớp 12 Toán học
· 13:27 31/08/2021

cho hc SABC có đáy tam giác vuông tại B, sa vuông đáy , bc = a, sa = a căn ba , góc ACB = 60, gọi m,n lần lượt là hình chíu a lên sb,sc. tính thể tích s.abc và m.abc. tính thể tích A.bcnm
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n
nhật vũ nguyễn
Lớp 9 Tiếng anh
· 13:31 31/08/2021
106. It has been 5 months since they built this house. This house 107. We started studying English was in June 2006 .We have 108The first time he drank beer was 3 years ago. He 109. This bike has been fixed for about 30 minutes. It is 110. My parents have never lived in Ha Noi before. This is 111. The last time they took their children to the park was last Sunday. Their children 112. This is the first time he went abroad, He hasn't
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Lan Linh
Lớp 8 Toán học
· 13:29 31/08/2021
thực hiện phép tính x^2-5x+6 phần x^2+7x+12 : x^2-4x+4 phần x^2+3x
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Nguyễn Như
Lớp 9 Toán học
· 13:21 31/08/2021
Cho d :y= (m^2 -1)x +m+3 . Tìm m để d song song với d' : y=3x và d cắt trục tung tại một điểm có tung độ là 1
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Hương Nguyễn
Lớp 9 Văn học
· 13:23 31/08/2021
Viết đoạn văn 10-12 câu về nỗi nhớ của Kiều trong đó có sử dụng thành phần phụ chú
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Trung Kiên Võ Lê
Lớp 11 Vật Lý
· 13:22 31/08/2021
8. Cho mạch điện như hình U = 9V, Đ1( 6V – 3W), Đ2(3V – 6W) a) Tính R1 và R2 để hai đèn sáng bình thường. b) Tính công suất tiêu thụ trong R1 và R2 c) Có cách nào khác của 2 đèn và 2 điện trở cùng với nguồn đã cho để hai đèn sáng bình thường.
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Hương Nguyễn
Lớp 9 Văn học
· 13:18 31/08/2021
Viết đoạn văn 10-12 về nhân vật Vũ Nương trong đó có sử dụng khởi ngữ
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Gia Phuc Tran
Lớp 7 Toán học
· 13:17 31/08/2021
Biểu diễn số hữu tỉ trên trục số -2/5 ;-3/2 ;2/3 ; 3/8
Trả lời (2) G
Đức Cường
Lớp 9 Tiếng anh
· 13:17 31/08/2021
13. It’s no use ……. her to change her mind. She will never listen to anyone. A. persuading B. to persuade C. making D. to ask 14. The salesman showed us ………. the washing machine. A. for using B. how to use C. to work D. the working of 15. When I was a child, I ………. play games with my friends in a big field. A. often B. am used to C. use to D. used to 16. When I had to make an emergency phone call, the secretary let me …… her phone. A. to use B. use C. using D. to be used
Trả lời (2)
n
nhật vũ nguyễn
Lớp 9 Tiếng anh
· 13:20 31/08/2021
English 9 rewrite sentence: present perfect vs present simple tense 94. It's the first time she has drunk wine. She 95. It has been three weeks since I bought this bike. 96. It is ten years since my brother last rode a bike. My brother 97. I haven't been in Thailand before. This 98. My mother hasn't cooked breakfast for a long time.99. It is five years since I sold that house I 100. The last time she saw him was in June 2007. She 101. I haven't taken a minibus since 2012. The last 102. It is ten days since they started painting my house. My house 103,It's been 3 months since she started playing badminton. She 104. Lan has never run before. This 105. They haven't eaten crabs for 25 days. The last time crabs
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Kyuu_yan
Lớp 4 Văn học
· 13:18 31/08/2021
......như núi thái sơn
Trả lời (12) T +9
n
nhật vũ nguyễn
Lớp 9 Tiếng anh
· 13:17 31/08/2021
Present perfect vs present simple tense 87. It is three years since I last spoke to her.88. Lan hasn't been in Vinh city since last month. The last 89. We haven't played soccer since 2008. The last 90. Ba's not come to my house for 2 months. It's 91. We have never seen him before. This is the first time 92. I have never read stories for five years. It's 93. Nam has not eaten any ice-creams since last summer. The last time
Trả lời (1) N
Lan Linh
Lớp 8 Toán học
· 13:11 31/08/2021
thực hiện phép tính x+3 phần x^2 -4 . 8-12x+6x^2-x^3 phần 9x+27
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Đức Cường
Lớp 9 Tiếng anh
· 13:06 31/08/2021
We have been away from home for a long time. We feel ……… now. A. sick B. tired C. homesick D. strange
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Hương Nguyễn
Lớp 9 Văn học
· 12:59 31/08/2021
Viết một đoạn văn ngắn về vẻ đẹp của Thúy Kiều trong đó có sử dụng thành phần cảm thán (10-12 câu)
Trả lời (1)
n
nhật vũ nguyễn
Lớp 9 Tiếng anh
· 12:58 31/08/2021
_________________________________________________________________present perfect vs present simple tense 79. He hasn't laughed so much for ages. It’s _________________________________________________________________ 80. I haven't enjoyed myself so much for years. It’s _________________________________________________________________ 81. The telephone rang for hours. It’s hours ____________________________________________________________ 82. I haven't seen him for ages. It’s _________________________________________________________________ 83. I have learned English for four years. We started ___________________________________________________________ 84. Ly’s father started to stop smoking last year. Ly’s father ___________________________________________________________ 85. The editor hasn’t written to Mai for a month. The editor last _________________________________________________________ 86. How long have you learned spanish? How long ago _________________________________________________________
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Kyuu_yan
Lớp 4 Toán học
· 12:57 31/08/2021
Có 45l mật ong đựng đều vào 8 cần.Nếu có 30l mật ong thì đựng đều vào mấy can như thế?
Trả lời (3)
n
nhật vũ nguyễn
Lớp 9 Tiếng anh
· 12:56 31/08/2021
65. Mary rang hours and hours ago. It it hours ___________________________________________________________ 66. It is ages since Alan visited his parents. Alan _______________________________________________________________ 67. John has not had his hair cut for over six months. It is ________________________________________________________________ 68. I has never seen such a beautiful building. It's the most _________________________________________________________ 69. I have never read such a romantic story. This is the most ______________________________________________________ 70. They had never had such a cold winter. It was the ___________________________________________________________ 71. You will never meet anyone more dangerous than Mrs Jones. Mr. Jones is the most __________________________________________________ 72. Man has never had such efficient servants as computer. Computer is the most __________________________________________________ 73. I haven't played football since 2000.ð The last time _________________________________________________________ 74. I haven't been to HCM city for 2 years. The last time _________________________________________________________ 75. I 've never met such a famous person before. It is the first time ______________________________________________________ 76. She hasn't seen that boy here before. It is the first __________________________________________________________ 77. She hasn't written to us since last year. The last time _________________________________________________________ 78. She started to learn E 8 years ago. It’s _________________________________________________________________ _________________________________________________________
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Dung Nguyễn
Lớp 5 Toán học
· 12:51 31/08/2021
Thôi thứ nhất chứa 2 và 3/4 kg gạo túi thứ hai chứa ít hơn túi thứ nhất 1/2 kg gạo hỏi cả hai túi chứa bao nhiêu kilôgam gạo
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T
Trang Đinh
Lớp 9 Văn học
· 12:50 31/08/2021
Viết một đoạn văn khoảng 200 chữ nêu suy nghĩ của em về vau trò của tình yêu thương
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n
nhật vũ nguyễn
Lớp 9 Tiếng anh
· 12:49 31/08/2021
Present perfect vs present simple tense 113.She started driving 1 month ago. She has 114. We began eating when it started to rain. We have 115. I last had my hair cut when I loft her house. I haven't 116 The last time she kissed me was 5 months ago .She hasn't 117. It is a long time since we last met.We havent
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Đức Cường
Lớp 9 Tiếng anh
· 12:48 31/08/2021
II/ Choose the word which best fits each gap of the passage. By using computers people can do things faster (1)_______by using other means. Computers can do any calculations (2)_______than a skilled mathematician. (3)_______a computer is programmed properly, it can (4)_______accurately. When we look back the history of computer (5)_______, we can see the great differences (6)_______the old computers and the modern ones. The old computers work (7)_______slower than the modern ones. We can use the new generation of computers conveniently because of their small size and many applied programs (8)_______are widely used all over the world. We can get any sorts of information (9)______the Internet. These are the reasonswhy computers (10)_______not only at offices but also at homes. 1. A. as B. than C. more D. less 2. A. more rapid B. rapidly C. more rapidly D. as rapidly 3. A. Although B. After C. Because D. If 4. A. work B. take C. make D. run 5. A. science B. scientific C. scientifical D. scientifically 6. A. on B. to C. between D. from 7. A. more B. less C. most D. much 8. A. which B. who C. where D. when 9. A. into B. from C. of D. to 10. A. use B. perform C. appear D. treat
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n
nhật vũ nguyễn
Lớp 9 Tiếng anh
· 12:42 31/08/2021
65. Mary rang hours and hours ago. It it hours ___________________________________________________________ 66. It is ages since Alan visited his parents. Alan _______________________________________________________________ 67. John has not had his hair cut for over six months. It is ________________________________________________________________ 68. I has never seen such a beautiful building. It's the most _________________________________________________________ 69. I have never read such a romantic story. This is the most ______________________________________________________ 70. They had never had such a cold winter. It was the ___________________________________________________________ 71. You will never meet anyone more dangerous than Mrs Jones. Mr. Jones is the most __________________________________________________ 72. Man has never had such efficient servants as computer. Computer is the most __________________________________________________ 73. I haven't played football since 2000.ð The last time _________________________________________________________ 74. I haven't been to HCM city for 2 years. The last time _________________________________________________________ 75. I 've never met such a famous person before. It is the first time ______________________________________________________ 76. She hasn't seen that boy here before. It is the first __________________________________________________________ 77. She hasn't written to us since last year. The last time _________________________________________________________ 78. She started to learn E 8 years ago. It’s _________________________________________________________________ 79. He hasn't laughed so much for ages. It’s _________________________________________________________________ 80. I haven't enjoyed myself so much for years. It’s _________________________________________________________________ 81. The telephone rang for hours. It’s hours ____________________________________________________________ 82. I haven't seen him for ages. It’s _________________________________________________________________ 83. I have learned English for four years. We started ___________________________________________________________ 84. Ly’s father started to stop smoking last year. Ly’s father ___________________________________________________________ 85. The editor hasn’t written to Mai for a month. The editor last _________________________________________________________ 86. How long have you learned spanish? How long ago _________________________________________________________
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Hương Nguyễn
Lớp 9 Văn học
· 12:45 31/08/2021
Viết một đoạn văn từ 10-12 về nhân vật Quang Trung trong đó có sử dụng thành phần tình thái
Trả lời (1)
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Dế Mèn Gaming
Lớp 6 Toán học
· 12:40 31/08/2021
Trên cùng một nửa mặt phẳng bờ chứa tia Ox, vẽ hai tia Oy, Oz sao cho xOy = 40 độ, xOz = 110 độ. a, Tính số đo góc yOz. b, vẽ tia Om là tia đối của tia Ox. Tính số đo góc zOm c, Tia Oz có phải là tia phân giac của góc yOm không? vì sao
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n
nhật vũ nguyễn
Lớp 9 Tiếng anh
· 12:39 31/08/2021
Present perfect vs present simple tense 58. My mother was the most warm-hearted person I've ever known. I have ___________________________________________________________ 59. I haven't been able to see them for over a year. It is _____________________________________________________________ 60. It stared to rain at 2 o'clock. It has ____________________________________________________________ 61. I have never been to the ballet before. It is ______________________________________________________________ 62. John and Mary moved to Edinburgh twenty years ago. It is ______________________________________________________________ 63. The police started looking for him two months ago. For two months now the ______________________________________________ 64. I have never seen a dirtier-looking dog. This is ____________________________________________________________
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黒死牟「Kokushibou」
Lớp 11 Toán học
· 12:34 31/08/2021

giải các phương trình lượng giác sau

1, sin(3x + π5) + sin(4π5 - 3x)=3
2. cos2xcosx + cos x =sin2xsinx
3. cos(3x + π3) + sin(5π6 + 3x)=2
Trả lời (1)
D
Dung Nguyễn
Lớp 5 Toán học
· 12:35 31/08/2021
L viết các phân số sau thành hỗn số 13phần 4
Trả lời (3) V D
Minh Châu Nguyễn
Lớp 7 Toán học
· 12:30 31/08/2021

5c08c708797e8f20d66f.jpg
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Minh Châu Nguyễn
Lớp 7 Toán học
· 12:29 31/08/2021

18943dd882ae74f02dbf.jpg
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Minh Châu Nguyễn
Lớp 7 Toán học
· 12:28 31/08/2021

18943dd882ae74f02dbf.jpg
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Hùng
Lớp 9 Địa lý
· 12:33 31/08/2021
Phân tích những diêud kiện tự nhiên thuận lợi và khó khăn ảnh hưởng đến sự phát triển công nghiệp của vùng trung du miền núi bắc bộ ?
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D
Dung Nguyễn
Lớp 5 Toán học
· 12:32 31/08/2021
Viết các phân số sau thành hỗn số 13 phần 4
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Dế Mèn Gaming
Lớp 6 Toán học
· 12:26 31/08/2021
Trên cùng một nửa mặt phẳng bờ chứa tia Ox, vẽ hai tia Oy, Oz sao cho xOy = 40 độ, xOz = 110 độ. a, Tính số đo góc yOz. b, vẽ tia Om là tia đối của tia Ox. Tính số đo góc zOm c, Tia Oz có phải là tia phân giac của góc yOm không? vì sao
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Hồ Minh Anh
Lớp 9 Tiếng anh
· 12:26 31/08/2021
Task 9. Rewrite the following sentences so that their meaning stays the same, using the words given. 1. Many people think there is no city in Viet Nam that is cleaner than Da Nang City.  →  Many people think ________________________________________________ 2. I found the trip to the craft village quite interesting. →  I felt quite  ______________________________________________________    .  3. My father says the place in which we are living is the noisiest one in Ha Noi. → My father says that no______________________________________________. 4. He hasn't changed much since I last met him in 2000. → He is the same ____________________________________________________    . 5. I have never eaten a more delicious food than this one. → This food    ________________________________________________________.
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