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15 tháng 9 2016

In a hour, Tom and Jack can do: \(\frac{1}{3}\) (the job)

In a hour, Tom can do: \(\frac{1}{4}\) (the job)

So in a hour, Jack can do: \(\frac{1}{3}-\frac{1}{4}=\frac{1}{12}\) (the job)

Thus, if Jack built the same fence alone, it would take 12 hours.

14 tháng 9 2016

làm sao để hỏi câu hỏi vậy giúp mình đi nhan

11. The teenagers aren’t buying that model these days. A. That model isn’t being bought by the teenagers these days. B. That model isn’t bought these days by the teenagers. C. On these days that model isn’t being bought due to the teenagers. D. Because of that model isn’t being bought these days by the teenagers 12. People say that he is the most experienced teacher of English. A. He is said to be the most experienced teacher of English. B. He is said the most experienced teacher of...
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11. The teenagers aren’t buying that model these days.

A. That model isn’t being bought by the teenagers these days.

B. That model isn’t bought these days by the teenagers.

C. On these days that model isn’t being bought due to the teenagers.

D. Because of that model isn’t being bought these days by the teenagers

12. People say that he is the most experienced teacher of English.

A. He is said to be the most experienced teacher of English.

B. He is said the most experienced teacher of English.

C. He said the teacher of English is most experienced.

D. That he is the most experienced teacher of English is said by people.

13. People believe that he is a good teacher.

A. It is believed that he was a good teacher. B. He is believed to be a good teacher.

C. They were really believed he is a good teacher. D. He is believed to have been a good teacher.

14. It is thought that he has died a natural death.

A. He is thought to have died a natural death. B. He is thought to be dying a natural death.

C. He is thought to have been dying a natural death. D. He is thought to die a natural death.

15. The coach said, “It’s time for you to go home, boys!”

A. The coach told the boys that it was time for you to go home.

B. The coach tells the boys that it was time for them to go home.

C. The coach told the boys that it is time for them to go home.

D. The coach told the boys that it was time for them to go home.

16.“Why don’t you go with me?” she asked me.

A. He asked me why I don’t go with him. B. He asked me why didn’t I go with him.

C. He asked me why I didn’t go with him. D. He asked me why he didn’t go with me.

17. Why don’t we recycle bottles and cans?

A. We must recycle bottles and cans, mustn’t we? B. What do we recycle bottles and cans for?

C. Shall we recycle bottles and cans? D. How can we recycle bottles and cans?

18. “Why don’t you use the new car, Mr Son?” said Nam.

A. Nam made Mr Son to use the new car. B. Nam asked Mr Son not to use the new car.

C. Nam suggested that Mr Son use the new car. D. Nam suggested that Mr Son uses the new car.

19“Why don’t you use the new car, Mr. Son?” said Nam

A. Nam made Mr. Son to use the new car. B. Nam asked Mr. Son not to use the new car.

C. Nam suggested that Mr. Son use the new car. D. Nam suggested that Mr. Son uses the new car.

20.“You should not lend Susan any more money, Linda” said Nancy.

A. Nancy advised Susan not to borrow any more money from Linda.

B. Nancy advised Linda not to lend Susan any more money.

C. Linda advised Susan not to lend Linda any more money.

D. Nancy advised Linda to lend Susan some more money.

1
3 tháng 3 2020

11. The teenagers aren’t buying that model these days.

A. That model isn’t being bought by the teenagers these days.

B. That model isn’t bought these days by the teenagers.

C. On these days that model isn’t being bought due to the teenagers.

D. Because of that model isn’t being bought these days by the teenagers

12. People say that he is the most experienced teacher of English.

A. He is said to be the most experienced teacher of English.

B. He is said the most experienced teacher of English.

C. He said the teacher of English is most experienced.

D. That he is the most experienced teacher of English is said by people.

13. People believe that he is a good teacher.

A. It is believed that he was a good teacher. B. He is believed to be a good teacher.

C. They were really believed he is a good teacher. D. He is believed to have been a good teacher.

14. It is thought that he has died a natural death.

A. He is thought to have died a natural death. B. He is thought to be dying a natural death.

C. He is thought to have been dying a natural death. D. He is thought to die a natural death.

15. The coach said, “It’s time for you to go home, boys!”

A. The coach told the boys that it was time for you to go home.

B. The coach tells the boys that it was time for them to go home.

C. The coach told the boys that it is time for them to go home.

D. The coach told the boys that it was time for them to go home.

16.“Why don’t you go with me?” she asked me.

A. He asked me why I don’t go with him. B. He asked me why didn’t I go with him.

C. He asked me why I didn’t go with him. D. He asked me why he didn’t go with me.

17. Why don’t we recycle bottles and cans?

A. We must recycle bottles and cans, mustn’t we? B. What do we recycle bottles and cans for?

C. Shall we recycle bottles and cans? D. How can we recycle bottles and cans?

18. “Why don’t you use the new car, Mr Son?” said Nam.

A. Nam made Mr Son to use the new car. B. Nam asked Mr Son not to use the new car.

C. Nam suggested that Mr Son use the new car. D. Nam suggested that Mr Son uses the new car.

19“Why don’t you use the new car, Mr. Son?” said Nam

A. Nam made Mr. Son to use the new car. B. Nam asked Mr. Son not to use the new car.

C. Nam suggested that Mr. Son use the new car. D. Nam suggested that Mr. Son uses the new car.

20.“You should not lend Susan any more money, Linda” said Nancy.

A. Nancy advised Susan not to borrow any more money from Linda.

B. Nancy advised Linda not to lend Susan any more money.

C. Linda advised Susan not to lend Linda any more money.

D. Nancy advised Linda to lend Susan some more money.

ai dịch được câu này mình cho 4 likeHome »Van describe»Ta her motherIn our family, because I was the youngest, so everyone loves you run out of ink, but she was close, take care of you most.This year, her mother nearly forty-one years old. With a slim, slender, has highlighted the beauty of mother with maternal gentle, silky black hair that was long lumbar mother tucked up neatly when the road. His eyes watched her mother pick with eyes always affectionately close. Mother oval face...
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ai dịch được câu này mình cho 4 like

Home »Van describe»
Ta her mother

In our family, because I was the youngest, so everyone loves you run out of ink, but she was close, take care of you most.

This year, her mother nearly forty-one years old. With a slim, slender, has highlighted the beauty of mother with maternal gentle, silky black hair that was long lumbar mother tucked up neatly when the road. His eyes watched her mother pick with eyes always affectionately close. Mother oval face with a white skin. Thin lips red under high nose looks delicate making increasingly seen as beautiful. When mother laugh look florid, just blooming roses morning. Mother hands plump, fair had raised, mentoring children from an early age they just womb. The voice of a passionate mother, while smoothly as ru language, such as birds chirped at robins morning. Her mother sewing and embroidery is very beautiful, especially the long dress, casual or dressed mother of neat, as a high school teacher mother wore a long coat and sew by her mother looks graceful, elegant.

At home, she was in charge of housework. Mother handed to me the light work such as sweeping, folding clothes ... And three, the mother extra laundry, cleaning the house clean, occasionally she bought flowers for distillation at the beautiful lounge. Each arrival mother always warmly welcomed, invited guests fruit plate and cool water. Morning wake up early mother to prepare the breakfast for the entire family, to the two brothers went to school on time to school. When you sick mother to wake during the night to take care of. In the evening, she spends about thirty minutes to lecture me, then she sits down to marking, lesson plans to prepare for tomorrow's class at school ... Mother is merciful, compassionate, mother of her class watch students like his children, also coached loving mother toner should be a lot of students love. When you foul, I just remind, not scolded and has not hit me ever.

Her mother is worth you, I always loved the proud mother and a son-mother. Whenever mother hugging, lying in the womb I feel warm. In my heart, she was all, she is the most wonderful fairy in my life ... I was looking forward to their big hurry to make wise harder. I promise to keep working hard and trying to do well to repay his mother and teachers were taught, so who raised children. Mom, I love you too!

khi dịch ra hay lắm đó

1
26 tháng 10 2015

hình như là thế này 

Trong gia đình của chúng tôi, bởi vì tôi là người trẻ nhất, vì vậy tất cả mọi người yêu thương bạn hết mực, nhưng cô đã được đóng, chăm sóc của bạn nhất.

Năm nay, mẹ cô gần bốn mươi mốt tuổi. Với một mỏng, thanh mảnh, đã làm nổi bật vẻ đẹp của người mẹ với nhẹ nhàng, mái tóc đen mượt mà bà mẹ là mẹ thắt lưng dài thắt lên gọn gàng khi con đường. Mắt anh nhìn mẹ cô chọn với đôi mắt luôn trìu mến gần gũi. Mẹ khuôn mặt hình bầu dục với một làn da trắng. Đôi môi mỏng đỏ mũi cao trông tinh tế tỉ càng bị coi là đẹp. Khi mẹ cười trông tươi như hoa, chỉ nở vào buổi sáng hoa hồng. Mẹ tay tròn trĩnh, công bằng đã được nâng lên, cố vấn trẻ em từ khi còn nhỏ họ chỉ tử cung. Giọng nói của một người mẹ đam mê, trong khi êm như tiếng ru, như tiếng chim líu lo vào buổi sáng chim cổ đỏ. May mẹ cô và thêu rất đẹp, đặc biệt là những chiếc váy dài, không thường xuyên hoặc mẹ mặc quần áo gọn gàng, như một người mẹ giáo viên trung học mặc một chiếc áo khoác dài và may bởi mẹ cô trông duyên dáng, thanh lịch.

Ở nhà, cô ấy là người phụ trách công việc gia đình. Mẹ trao cho tôi những công việc nhẹ nhàng như quét dọn, quần áo gấp ... Và ba, mẹ thêm giặt ủi, dọn dẹp nhà cửa sạch sẽ, thỉnh thoảng cô ấy mua hoa chưng cất tại phòng đẹp. Mỗi mẹ đến luôn chào đón nồng nhiệt, tấm mời khách trái cây và nước mát. Buổi sáng thức dậy sớm mẹ để chuẩn bị bữa ăn sáng cho cả gia đình, cho hai anh em đi học đúng giờ để học. Khi bạn ốm mẹ phải thức suốt đêm để chăm sóc. Vào buổi tối, cô dành khoảng ba mươi phút để giảng bài cho tôi, sau đó cô ngồi xuống để đánh dấu, kế hoạch bài học để chuẩn bị cho lớp ngày mai ở trường ... Mẹ có lòng thương xót, từ bi, mẹ của cô sinh viên lớp hồ như con của mình, cũng huấn luyện yêu thương mẹ mực nên được rất nhiều học sinh tình yêu. Khi bạn phạm lỗi, tôi chỉ nhắc nhở, không la mắng tôi và đã không đánh tôi bao giờ.

Mẹ cô là giá trị bạn, tôi luôn luôn yêu thương mẹ tự hào và một con trai mẹ. Bất cứ khi nào mẹ ôm, nằm trong bụng mẹ tôi cảm thấy ấm áp. Trong trái tim tôi, cô ấy là tất cả, cô là cổ tích tuyệt vời nhất trong cuộc đời của tôi ... Tôi đã mong muốn vội vàng lớn của họ để làm cho khôn ngoan hơn. Tôi hứa sẽ tiếp tục làm việc chăm chỉ và cố gắng làm tốt để trả nợ mẹ và giáo viên của ông đã dạy, vì vậy người nuôi dạy các con.

14 tháng 10 2016

đây là học toán chứ ko phải là học anh nghe rõ chưa

14 tháng 10 2016

lam ơn đi mình biết Nguyễn Duy Đạt

Giúp mình làm các câu hỏi này nha: (càng nhiều càng tốt!)1. Tiffany and Ryan deposit some amount in a joint bank account such that total balance remains 500. If  amount deposited by Tiffany and Ryan are plotted as a linear graph on xy plane, find the area between this graph and the coordinate axis.2.A group of workers is paving a road. If they pave 200m of the road a day, they will need 3 more days. to finish the work. If they pave 240m of the road a day, they will finish the work...
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Giúp mình làm các câu hỏi này nha: (càng nhiều càng tốt!)

1. Tiffany and Ryan deposit some amount in a joint bank account such that total balance remains 500. If  amount deposited by Tiffany and Ryan are plotted as a linear graph on xy plane, find the area between this graph and the coordinate axis.

2.A group of workers is paving a road. If they pave 200m of the road a day, they will need 3 more days. to finish the work. If they pave 240m of the road a day, they will finish the work 2 days in advance. How long is the road, in meter?

3. Mrs. Darlie has a silver ring, a golden ring and a diamond ring. She put them on her left hand. Each ring can be on any of the five fingers. When there are two or three rings on the same finger, if the order in which they are put is different, that couunt as a different way. How many different ways for Lea to put these rings?

4. Let P(x) be a polynomial with degree 3 such that P(1)=3, P(2)=3, P(3)=7, P(4)=21. Find the value of P(5).

1

4. Call that polynomial P (x) = ax3 + bx2 + cx + d

We have P(1)=a+b+c+d=3   (1)

P(2)=8a+4b+2c+d=3   (2)

P(3)=27a+9b+3c+d  =7       (3) 

P(4)=64a+16b+4c+d     =21    (4)

From (1) and  (2) =>  7a+3b+c=0

From (1) and  (4)  => 63a+15b+3c=18

=> 12b+6c=-18  => 2b+c=-3

From (1) and  (3) =>26a+8b+2c=4=> 13a+4b+c=2

=> 13a+2b=5

It is possible

Giúp mình làm các câu hỏi này nha: (càng nhiều càng tốt!)1. Tiffany and Ryan deposit some amount in a joint bank account such that total balance remains 500. If  amount deposited by Tiffany and Ryan are plotted as a linear graph on xy plane, find the area between this graph and the coordinate axis.2.A group of workers is paving a road. If they pave 200m of the road a day, they will need 3 more days. to finish the work. If they pave 240m of the road a day, they will finish the work...
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Giúp mình làm các câu hỏi này nha: (càng nhiều càng tốt!)

1. Tiffany and Ryan deposit some amount in a joint bank account such that total balance remains 500. If  amount deposited by Tiffany and Ryan are plotted as a linear graph on xy plane, find the area between this graph and the coordinate axis.

2.A group of workers is paving a road. If they pave 200m of the road a day, they will need 3 more days. to finish the work. If they pave 240m of the road a day, they will finish the work 2 days in advance. How long is the road, in meter?

3. Mrs. Darlie has a silver ring, a golden ring and a diamond ring. She put them on her left hand. Each ring can be on any of the five fingers. When there are two or three rings on the same finger, if the order in which they are put is different, that couunt as a different way. How many different ways for Lea to put these rings?

4. Let P(x) be a polynomial with degree 3 such that P(1)=3, P(2)=3, P(3)=7, P(4)=21. Find the value of P(5).

2
1. Tiffany và Ryan gửi một số tiền vào tài khoản ngân hàng chung sao cho tổng số dư còn lại 500. Nếu số tiền được gửi bởi Tiffany và Ryan được vẽ dưới dạng biểu đồ tuyến tính trên mặt phẳng xy, hãy tìm khu vực giữa biểu đồ này và trục tọa độ. 2.Một nhóm công nhân đang mở đường. Nếu họ mở 200m đường mỗi ngày, họ sẽ cần thêm 3 ngày nữa. để hoàn thành công việc. Nếu họ mở 240m đường mỗi ngày, họ sẽ hoàn thành công việc trước 2 ngày. Bao lâu là đường, tính bằng mét? 3. Bà Darlie có một chiếc nhẫn bạc, một chiếc nhẫn vàng và một chiếc nhẫn kim cương. Cô đặt chúng lên tay trái. Mỗi chiếc nhẫn có thể nằm trên bất kỳ ngón tay nào trong năm ngón tay. Khi có hai hoặc ba chiếc nhẫn trên cùng một ngón tay, nếu thứ tự chúng được đặt khác nhau, thì đó là một cách khác nhau. Có bao nhiêu cách khác nhau để Lea đặt những chiếc nhẫn này? 4. Đặt P (x) là một đa thức có bậc 3 sao cho P (1) = 3, P (2) = 3, P (3) = 7, P (4) = 21. Tìm giá trị của P (5).
21 tháng 6 2019

#)Góp ý :

Mấy câu như thế này thì bạn nên lên Discuss with Math You - MathYou hỏi nhé ^^

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