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18 tháng 9 2015

Gọi số gói mà ông vịt Scrooge mua của McVees và Jays là \(x,y.\) Điều kiện: \(x,y\)  là số tự nhiên. Nếu số người ở hội nghị là \(N\) thì ta có phương trình \(6x+5y=N.\)

a) Nếu ông vịt phải mua cho 58 người, ông chỉ cần mua của McVees 3 gói và của Jays là 8 gói. Khi đó \(6x+5y=6\times3+5\times8=58.\) 

b)  Bài toán yêu cầu chúng ta xác định số nguyên \(N\) lớn nhất mà ông vịt keo kiệt bắt buộc phải mua thừa ra một số gói Bim bim, nếu muốn đảm bảo mỗi người trong hội nghị phải được ăn đúng 1 gói Bim bim.   

Đầu tiên ta nhận xét rằng nếu số người \(N\) chia hết cho 5 thì ông Vịt của chúng ta không cần phải phí phạm tiền của mình, vì khi đó ông ấy chỉ việc mua của bạn Jays \(\frac{N}{5}\) gói, còn không mua của McVees. 

Khi  \(N=20\) ông Vịt cần mua \(\frac{N}{5}=4\) gói của Jays, không mua của McVees. Nếu \(N=21\)  ông chỉ cần giảm số gói mua của Jays đi 1 và tăng số gói của mua của McVees lên 1, tức là mua của McVees 1 gói và của Jays 4 gói. Khi đó số bim bim mua là \(6\times1+5\times3=21=N.\) Tương tự cho \(N=22,23,24.\) VÌ khi \(N\ge20,N\vdots5\) thì số gói mua của Jays là \(\frac{N}{5}\ge4\to\) bằng cách trên, khi \(N\) tăng thêm 1 thì số gói mua của Jays giảm đi 1 và số gói mua của McVees tăng thêm 1. \(N\) sẽ tăng cho đến khi \(N+5\) ta lại gặp một số chia hết cho 5 và có thể lặp lại điều trên. 

Cuối cùng khi \(N=19\) thì phương trình \(6x+5y=19\) không có nghiệm tự nhiên, thực vậy \(6x\le19\to x\le3\to x=0,1,2,3\). Tuy nhiên \(19\) chia cho \(5\) dư \(4\) nên cả \(4\) trường hợp này đều không thoả mãn. (hoặc thử trực tiếp).

Vậy số \(N\) lớn nhất là \(19.\) Khi \(N>19\) thì ông Vịt sẽ tiết kiệm được tiền của mình khi mà không cần phải mua thừa ra số gói Bim-bim.

17 tháng 9 2015

@@.pa rất tốt nhưng con rất tiếc

17 tháng 9 2015

pa pa giết.con ko muốn chớt trẻ.đời còn dài mà gái con nhiều.chớt phí lắm

17 tháng 9 2015

thôi tốt nhất là cmt ít thôi cứ đính dáng đến Mụ già là tui xui 

@Nguyễn Bảo Trung đây nè:photo ngang nhé! Holi Festival is a Spring Festival of Hindus in India and Nepal, also known as the Festival of colors or share the love Festival. This is an ancient Festival of the Hindus and have become popular with those who do not follow Hinduism in many places in South Asia, as well as residents of other communities outside of Asia photo tờ thứ 2 nhé! Holi is a festival that lasted for two days and started on Purnima (full moon day) falls on Bikram...
Đọc tiếp

@Nguyễn Bảo Trung

đây nè:photo ngang nhé!

Holi Festival is a Spring Festival of Hindus in India and Nepal, also known as the Festival of colors or share the love Festival. This is an ancient Festival of the Hindus and have become popular with those who do not follow Hinduism in many places in South Asia, as well as residents of other communities outside of Asia

photo tờ thứ 2 nhé!

Holi is a festival that lasted for two days and started on Purnima (full moon day) falls on Bikram Sambat calendar of Hindus [4] the month of Falgun, usually on days the end of February and mid March of the Gregorian calendar. The first day of Holika Dahan or Chhoti called Holi and on Monday as Rangwali Holi, Dhuleti, Dhulandi or Dhulivandan. [5]
Holi celebration begins on the night before Holi with a bonfire where Holika people gather, do the religious ceremonies in front of the fire, and prayed for the wicked in the person they will be take out when the fire started burning. The next morning was celebrated as Holi Festival-one day Rangwali day color free for everyone, where all participants play, Chase and coloring with colored powder dry and mutual water color, some carrying pistols and water balloons filled with colored water to the war in their country. Anyone and everyone regardless of whether they are friends or strangers, rich or poor, man or woman, child or older person is joining the same game. The play and the match by color is played out on the streets, in public parks, outside of temples and other buildings. Some groups of people carrying drums and other instruments, to go from one place to another, singing and dancing.People to visit family, friends and enemies to throw pigments together, laughing and talking crap, then share each other's dishes on Holi, food and drinks. Some drinks have intoxicating substances.For example, bhang, a drunk-causing material made from the leaves of cannabis, be mixed into drinks and sweets and has been widely used. In the evening, after the alcohol, people change clothes and visit friends and family.

Holi is celebrated at the time of the near the vernal equinox, at the full moon (Phalguna Purnima).Festival days, is determined according to the Hindu calendar, change from year to year according to the Gregorian calendar, usually in March, sometimes is Feb. The Festival signifies the victory of good before the evil, the arrival of spring, the end of winter, and give people a day to meet the others, fun, laughing, forget, forgive, and fixing the broken relationship, and it was also held as a thank you for a bumper crop.

Tờ 3!~

Holi Festival is important to the Hinđu as well as many other Indian and South Asian origin people. It was held in late winter, on the last full moon of the lunar month of Phalgun (February or March), (Phalgun Purnima), which usually falls in March, sometimes in late February

The Festival has many purposes, but the most prominent is the marked spring. In the literature of the 17th century, it has been defined as an agricultural Festival, the Festival celebrates the season bumper harvest in the spring, good and fertile. The Hindus believe that there is a time to enjoy the rich colors of spring and say goodbye to winter. For many religious Hinđu, the Festival of Holi marks the beginning of the new year as well as an occasion to reset and refresh the already broken relationship, end conflicts and freeing themselves by dirty feelings of impurities accumulated from the past.

It also has a religious purpose, the icon shown in the legend of Holika. The night before Holi, bonfires are lit in a ceremony called the Dahan (burning of Holika) or Little Holi. People gather near the fire, singing and dancing. The next day, Holi, also known as Dhuli in Sanskrit Dhulheti, Dhulandi or Dhulendi, or, are held. Children and adolescents of color solution spray powder (the colored gulal) on each other, laugh and celebrate, while adults obliterate pigments dry (abir) on each other's faces.Visiting the first House to be teased with color, then served with the food typical of Holi, desserts and drinks. After playing with colors and clear, people bathing, dressing clean and visit friends and family.

Like Holika Dahan, Kama Dahanam are held in some regions in India. The Festival of colors in these regions is known as Rangapanchami, and on Thursday the day after the full moon. (Poornima)

Tờ 4

The history and significance of crab Hou Lijie

There's an iconic legends to ultimate like why Holi is celebrated as a Festival of colors. From "Holi" derived from "bad girls" Holika of demon king Hiranyakashipu. The Festival is said to have originated from Prahladpuri Temple of Mulan in the Punjab. The original temple of Prahladpuri is said to have been built by the son of Hiranyakashipu, Prahlada.

According to legend, King Hiranyakashipu is the ruler of Multan and has earned an honored made him almost invincible. He became Amir, thinking himself to be God, that require all people to worship only him.

However, his own son, Prahlada is not listening to him. Prahlada always faithful to Scripture Vishnu.This made Hiranyakashipu infuriated. He has taken the cruel punishment for his children, but nothing can affect the determination for that what I do is true of Prahlada. Finally, Holika, the evil aunt of Prahlada tricked him to sit on the pyre with her. Holika who wears a robe to avoid being injured by the fire, while Prahlada then not so. When the fire flared up, dressing gowns flying off of Holika and EnCase Prahlada. help him survive while Holika was burned alive. See so, Hiranyakashipu could not restrain his anger, smashes a pillar with his rod. There was a loud sound and then Holy Vishnu appears below the shape of Holy Narashima and then he killed Hiraynakashipu. The flame is a symbol to remind us of the triumph of good before the evil, of Prahlada and Hiraynakashipu well as the flame was burning Holika. The next day, when the flame has cooled down, people smeared ashes over the forehead, a custom still was some people obey. Finally, the pigments have been used to organise Holi.

Tờ 5

The importance of Hou Lijie

In the Braj region of India, where Hindu gods, Krishna, grew up, the Festival is celebrated for 16 days (until Rangpanchmi ceremony) to celebrate the love of Radha for Krishna. The Festival officially opens in the spring, with the Festival of Holi is celebrated as a Festival of love. There is also a symbolic legend behind the day celebrating Krishna. When is a child, Krishna had brought the blue skin color feature because she she Putana poisoned him with her milk. In his childhood, Krishna was desperate when the white girl Radha and the other girls can like him because of the color of his skin or not. His mother tired with the desperate and she had asked him to approach Radha and obliterate any pigments would he like her face up. He did so, and then Radha and Krishna became husband and wife. Since then, the color on the Radha was celebrated on the day of Holi. In addition to India, this contributed to the legend explains the significance of Holi are common in some communities of the Caribbean and South America originating from India as Guayana, Trinidad and Tobago. It also held enthusiastic in Mauritus.

The Festival of Holi mean more culture that's day Festival to finish and get rid of the guilt of the past, to end the conflict by having to face everyone, one day to the forgotten and forgiven. People charged or cleared the debts, as well as once again agreed with each other about everything in their life. Holi also marks the beginning of spring, and for the start of the new year.

Mik ko gửi qua tin nhắn đc nên chỉ còn cachfs này nhé

3
25 tháng 3 2017

Ukm, công nhận m copy chu đáo thật!!!

25 tháng 3 2017

au fải mất công gủi cho hấn dó

20 tháng 7 2016

sao toan la TA ko z

đọc thư, sau đó trả lời các câu hỏi:hi , peter. i am writing to talk about my school subject .  i love math most , this subject is so interesting and hard . Well, i must say i love informatics , too. i want to be an informatics technician as my older brother . he is writing many game progams and studying progams for teenagers . he is so intelligent . oh , i forget to tell you one of my secrets . i spend most of my free time on drawing , so i enjoy art subject at my school , too ....
Đọc tiếp

đọc thư, sau đó trả lời các câu hỏi:

hi , peter. i am writing to talk about my school subject .  i love math most , this subject is so interesting and hard . Well, i must say i love informatics , too. i want to be an informatics technician as my older brother . he is writing 

many game progams and studying progams for teenagers . he is so intelligent . oh , i forget to tell you one of my secrets . i spend most of my free time on drawing , so i enjoy art subject at my school , too . my art teacher is quite strict but fun. do you tink that an informatics technician can be a painter  ? if yes , i will be both . what about you ? write me about your favorite school subject . 

love ,

viet 

 

1. who did write this letter ?

2. which job does viet want to work in the future ?

3. which word in the letter is the synonym of the word clever ?

4. is his art teacher strict or tall ?

5.  what does viet 's older brother do ?

5. what is the letter about ?

12
12 tháng 1 2016

bạn ơi lên Online math chỉ để học toán thôi ko học tiếng anh đâu

vậy làm phiền các bạn tick cho mk nha

12 tháng 1 2016

đây là tiếng anh lớp mấy vậy bạn ơi khó quá

1. Complêt the sentences , using although , despite , in spite of , however , or nevertheless. Sometimes , two answears are possible.1. I think i did OK in my speech last night -------------------- I'd had almost no sleep for 24 hours.2. ---------------------- I heard the telephone ring , I didn't answer it.3. We enjoyed our holiday ------------------- the rain.4. -------------------- he got top marks at high school , he never went to university.5. -------------------------- there was no...
Đọc tiếp

1. Complêt the sentences , using although , despite , in spite of , however , or nevertheless. Sometimes , two answears are possible.

1. I think i did OK in my speech last night -------------------- I'd had almost no sleep for 24 hours.

2. ---------------------- I heard the telephone ring , I didn't answer it.

3. We enjoyed our holiday ------------------- the rain.

4. -------------------- he got top marks at high school , he never went to university.

5. -------------------------- there was no electricity , I was able to read because I had a candle.

6. She failed the test ------------------ she studied hard.

7. --------------------- difficulties , the firemen managed to save many people who were caught in the fire.

8. Everone thought she would accept the offer . -----------------------, she turned it down.

9. Carol arrived at the meeting --------------------- I asked her not to be there.

10. It looks like they're going to succeed------------------ their present diffculties.

11. ---------------------- it was raining heavily , he went out without a raincoat.

12. My father is very busy.--------------------------, he is always willing to give a hand with the housework.

13. The sky was grey and cloudy .----------------------- , we went to the baech.

14. Some Englis words have the same pronuncation--------------------- they are spell differently , for example , dear and deer.

2. Put question for the underlined part of each sentence: CHỮ IN HOA LÀ PHẦN GẠCH CHÂN NHÉ!

1. I have known Marie FOR NINE YEARS.

2. YES , they used to be friends at the university.

3. Sarah left TWO HOURS  AGO

5. She is watching TOM AND JERRY.

GIÚP MK VS , MK ĐANG CẦN RẤT GẤP , MAI MK PHẢI NỘP BÀI RỒI . HELP ME!!!!!!!

4
17 tháng 4 2017

Righttttttt, we're in math class not english class

ask somewhere else for help, if u can't find any, then you're f**ked

17 tháng 4 2017

đây là toán nha bạn ,bạn nên đăng bài này vào trang wed https://hocmai.vn/

1 idea. / Walking in the park / seems / a geat / to be2 two languages / high school . / was at / I studied / when I3 the TV station / did / the program ? / How long / broadcast4 They should / put a chair / the table / and the sofa . / between 5 Biology / twice a / We have / week . / lessons 6 Why does Mr . john / about / his son's / worry / study7 to see / last night . / the movies / I went to /a film8 of birth / of November ? / Is / his date / the eighth9 Why does / to be / an engineer ? /...
Đọc tiếp

1 idea. / Walking in the park / seems / a geat / to be

2 two languages / high school . / was at / I studied / when I

3 the TV station / did / the program ? / How long / broadcast

4 They should / put a chair / the table / and the sofa . / between 

5 Biology / twice a / We have / week . / lessons 

6 Why does Mr . john / about / his son's / worry / study

7 to see / last night . / the movies / I went to /a film

8 of birth / of November ? / Is / his date / the eighth

9 Why does / to be / an engineer ? / Philip / want 

10 She never /  buys / cabbages / potatoes / at the market

11 Ha live  / with his brother /  45 Tran Hung Dao street / at / in Ha Noi .

12 The public library / has / of book . / thousands / in the city

13 seat of / in the front / Would  you / the taxi ? / mind siting

14 sciences. / good at / Quan is / very / natural

15 to / the supermarket. / It's / a short walk / from here

16 Are / you / seeing / the dentist ? / scared of 

17 do you / part in ? / What / often take / school activities

18 There was / a souvenir shop / the aquarium . / the sxit or / near

19 a friend / I came to / the party / of mine . / with

20 the moment. / measuring her height / the scale at / Hoa is / and weighing on 

21 in Asia / drink / often / The people / tea 

22 nose. / a long face / straight / and a / He has 

23 you again / How / I am / glad / to see

   

2
12 tháng 1 2017

1.walking in the park seems to be a great idea 2.i studied two languages when i was at high school 3. how long did the tv station broadcast the program ? 4.they should put a chair between the table and the sofa 5. we have biology lessons twice a week

12 tháng 1 2017

1.Walking in the park seems to be a great idear.

2.I studied two languages when I was at high school.

3.How long did the TV station broadcast the program?

4.They should put a chair between the table and the sofa.

5.We have Biology lessons twice a week.

6.Why does Mr.iohn  worry about his son's study?

7.I went to the movies to see a film last night.

8.Is his date of birth is the eightn of November?

9.Why does Philip want to be an engineer?

10.She never buys cabbages and potatoes at the market.

11. Ha live  with his brother at  45 Tran Hung Dao street in Ha Noi .

12.The public library in the city has 1 thousands of book . 

13.Would you mind sitting in the front seat of the taxi?(không chắc chắn)

14.Quan is very good at natural sciences.

15.It's a short walk from here to the supermarket.

16.Are you scared of seeing the dentist?

17.What school activities do you often take part in?

18.There was a souvenir shop near the sxit or aquarium .

19.I came to the party with a friend of mine.

20.Hoa is measuring her height and weighing on the scale at the moment.

21.The people in Asia often drink tea.

22.He has a long face  and a straight nose.

23.How glad  I am to see you again?(không chắc chắn)

                                 SAI THÌ THÔI NHA!^^