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21 tháng 12 2021

1 : 12,5 = 0.08

21 tháng 12 2021

1 : 12,5 = 0,08

22 tháng 10 2016

Năm 1974

tk nhé

ai k mình mình k lại

22 tháng 10 2016

mẹ hơn con 30 tuổi . 

Hiệu số phần bằng nhau :

  7 - 2 = 5 ( phần )

Tuổi mẹ năm 2016 :

 30 : 5 x 7 = 42 ( tuổi )

Năm sinh của mẹ :

 2016 - 42 = 1974

đ/s : 1974

nhé !

1. She asked me where he ________. (1 Point) A. were B. was C. is 3.2. Julia ________ what I was doing. (1 Point) A. says to me B. told to me C. asked me 4.3. Nam asked me why I _________ out the night before. (1 Point) A. had gone B. was gone C. went 5.4. "Who was that beautiful woman?" - He asked me ________________________________. (1 Point) A. who that beautiful woman was. B. who that beautiful woman had been. C. who that beautiful woman is. 6.5. Laura asked, “How is your mother?” - Laura...
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1. She asked me where he ________. (1 Point) A. were B. was C. is 3.2. Julia ________ what I was doing. (1 Point) A. says to me B. told to me C. asked me 4.3. Nam asked me why I _________ out the night before. (1 Point) A. had gone B. was gone C. went 5.4. "Who was that beautiful woman?" - He asked me ________________________________. (1 Point) A. who that beautiful woman was. B. who that beautiful woman had been. C. who that beautiful woman is. 6.5. Laura asked, “How is your mother?” - Laura asked me how _______ was. (1 Point) A. his mother B. her mother C. my mother 7.6. Ba asked me, "What are you going to do at the weekend?" – Ba asked me what I _________ to do at the weekend. (1 Point) A. had gone B. was going C. were going 8.7. They asked me, "Where will you live after graduation?" – They asked me where I ___________ after graduation. (1 Point) A. live B. will live C. would live 9.8. Martin asked me, "What were you doing when I saw you?" – Martin asked me what I ______________ when she _______ me. (1 Point) A. had been doing/saw B. had done/had seen C. did/saw 10.9. She asked me "How was the journey?" – She asked me how the journey ____________. (1 Point) A. is B. was C. had been 11.10. John asked me, “How often do you go to the cinema?” – John asked me how often I _________ to the cinema. (1 Point) A. went B. had gone C. had been gone 12.QUESTIONS 11 - 20: Complete the sentences in reported speech. Note the change of pronouns and tenses. 11. "Where is my umbrella?" she asked. → She asked ________________________________________. (1 Point) Enter your answer 13.12. "How are you?" Martin asked us. → Martin asked us _________________. (1 Point) Enter your answer 14.13. He asked, "Do I have to do it?" → He asked ________________. (1 Point) Enter your answer 15.14. "Where have you been?" the mother asked her daughter. → The mother asked her daughter ___________________. (1 Point) Enter your answer 16.15. "Which dress do you like best?" she asked her boyfriend. → She asked her boyfriend __________________________ (1 Point) Enter your answer 17.16. "What are they doing?" she asked. → She wanted to know _____________. (1 Point) Enter your answer 18.17. "Are you going to the cinema?" he asked me. → He wanted to know ________________. (1 Point) Enter your answer 19.18. The teacher asked, "Who speaks English?" → The teacher wanted to know _____________. (1 Point) Enter your answer 20.19. "How do you know that?" she asked me. → She asked me ____________________. (1 Point) Enter your answer 21.20. "Has Caron talked to Kevin?" my friend asked me. → My friend asked me ___________________________________. (1 Point) Enter your answer 22.QUESTIONS 21 - 30: There is a mistake in each of these sentences. Find and then correct it. 21. "Do you live in London?". He asked her if she is living in London. (1 Point) You enter your answer in the form: she -> you Enter your answer 23.22. "Did he arrive on time?". The boss asked his secretary if he was arrived on time. (1 Point) Enter your answer 24.23. "Have you been to Paris?". They asked him if I had been to Paris. (1 Point) Enter your answer 25.24. "Can you help me?". She asked me if I can help her. (1 Point) Enter your answer 26.25. "Are you working tonight?". They asked him if he was working tonight. (1 Point) Enter your answer 27.26. "Will you come later?" Mary asked Tom if I would come later. (1 Point) Enter your answer 28.27. "Do you like coffee?". He asked me if I like coffee. (1 Point) Enter your answer 29.28. "Is this the road to the station?". A traveler asked local residents if that is the road to the station. (1 Point) Enter your answer 30.29. "Did you do your homework?". My mother asked angrily if I did my homework. (1 Point) Enter your answer 31.30. "Have you studied reported speech before?". Tom asked Jenny if she studied reported speech before. (1 Point)

0
1 tháng 12 2015

                9****nha

15 tháng 4 2018

Tuổi con hiện nay là :
  36 : 6 = 6 ( tuổi )
Mẹ hơn con số tuổi là :

36 - 6 = 30 ( tuổi )
Khi con bằng \(\frac{1}{3}\)thì tuổi mẹ là :
30 : ( 3 - 1 ) = 15 ( tuổi )
Số năm nữa tuổi con bằng \(\frac{1}{3}\)tuổi mẹ là :
15 - 6 = 9 ( năm )
           Đáp số : 9 năm

15 tháng 4 2018

Sau 9 năm nữa thì tuổi con bằng 1/3 tuổi mẹ. tk cho mk nhe

11 tháng 6 2018

a.24 qua

b.anh:7 qua

  em:16 qua

Đề bài : Tuổi của con gái = 1/4 tuổi mẹ tuổi con trai = 1/5 tuổi mẹ . Tuổi con gái + với tuổi con trai là 18 tuổi

Phân số chỉ số tuổi của hai người con là :

1/4 +1/5 = 9/20 ( tuổi mẹ )

Tuổi mẹ là : 

18 : 9/20 = 40 ( tuổi )

Đáp số 40 tuổi

21 tháng 6 2016

Phân số chỉ sô tuổi của hai mẹ con là :

1/4 + 1/5 = 9/20 ( tuổi )

Tuổi mẹ là :

18 : 9/20 = 40 ( tuổi )

Đáp ssoo : 40 tuổi

2 tháng 4 2018

Phân số chỉ tổng số tuổi của hai con so với mẹ là :

       \(\frac{1}{5}+\frac{1}{3}=\frac{8}{15}\) tuổi mẹ

Tuổi mẹ là:

        \(24:\frac{8}{15}=45\)tuổi

ĐS : 45 tuổi

2 tháng 4 2018

ban nao nhanh mik k k k huryup 

7 tháng 3 2017

\(A=1-3+3^2-3^3+...-3^{2009}+3^{2010}\)

=> \(3A=3-3^2+3^3-3^4+...-3^{2010}+3^{2011}\)

=> \(4A=3A+A=1+3^{2011}\)

=> \(4A-1=3^{2011}\)là lũy thừa của 3

=> Đpcm

7 tháng 3 2017


3A=3-32+33-34+...-32010+32011
3A+A= 3-32+33-34+...-32010+32011
           1-3+32-33+...-32009+32010
4A=32011+1
4A-1=32011( đpcm)