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DT
Đỗ Thanh Hải
CTVVIP
7 tháng 8 2021
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BN
2
16 tháng 5 2022
`= 1 - 1/2 + 1 - 1/6 + ... + 1 - 1/56`
`= 1 - 1/(1.2) + 1 - 1/(2.3) + ... + 1 - 1/(7.8)`
`= 7 - (1/1 - 1/2 + 1/2 - 1/3 + 1/3 - 1/4+ 1/4 - 1/5 + 1/5 - 1/6 + 1/6 - 1/7 + 1/7 - 1/8`.
`= 8 - 1/8`
`= 63/64`.
2
16 tháng 5 2022
`A=1/2+5/6+11/12+19/20+29/30+41/42+55/56`
`A=1-1/2+1-1/6+1-1/12+1-1/20+1-1/30+1-1/42+1-1/56`
`A=(1+1+1+1+1+1+1)-(1/2+1/6+1/12+....+1/56)`
`A=7-(1/[1xx2]+1/[2xx3]+1/[3xx4]+....+1/[7xx8])`
`A=7-(1-1/2+1/2-1/3+1/3-1/4+....+1/7-1/8)`
`A=7-(1-1/8)`
`A=7-(8/8-1/8)`
`A=7-7/8`
`A=56/8-7/8=49/8`
23 tháng 12 2022
7 I have English on Monday
8 Can you sing and dance?
9 When do you have music?
10 I like reading books
11 What can she do?
12 My sister can play the guitar
13 Do you have music today?
14 What subjects do you have on Tuesday?
15 He has English on Mondays and Fridays
NN
13 tháng 3 2022
a) 4+2/5=22/5
b) 5/4+2=13/4
c) 3+3/2=9/2
d) 3/4-1/8=5/8
e) 17/15-7/10=13/30
g) 25/12-15/8=5/24
h) 5-4/3=11/3
i)15/4-3=3/4
13 tháng 3 2022
a)\(\dfrac{4}{1}+\dfrac{2}{5}=\dfrac{20}{5}+\dfrac{2}{5}=\dfrac{22}{5}\)
b)\(\dfrac{5}{4}+\dfrac{2}{1}=\dfrac{5}{4}+\dfrac{8}{4}=\dfrac{13}{4}\)
c)\(\dfrac{3}{1}+\dfrac{3}{2}=\dfrac{6}{2}+\dfrac{3}{2}=\dfrac{9}{2}\)
d)\(\dfrac{3}{4}-\dfrac{1}{8}=\dfrac{6}{8}-\dfrac{1}{8}=\dfrac{5}{8}\)
e)\(\dfrac{17}{15}-\dfrac{7}{10}=\dfrac{34}{30}-\dfrac{21}{30}=\dfrac{13}{30}\)
g)\(\dfrac{25}{12}-\dfrac{15}{8}=\dfrac{50}{24}-\dfrac{45}{24}=\dfrac{5}{24}\)
h)\(\dfrac{5}{1}-\dfrac{4}{3}=\dfrac{15}{3}-\dfrac{4}{3}=\dfrac{11}{3}\)
i)\(\dfrac{15}{4}-\dfrac{3}{1}=\dfrac{15}{4}-\dfrac{12}{4}=\dfrac{3}{4}\)
O
15 tháng 6 2021
1. what is your name ?
- My name is Mai.
2. how old are you ?
- I'm twelve years old.
3 . how are you today ?
- I'm fine.Thanks
4 . what class are you in ?
- I'm in class 6A2
5 . what your hobby ?
- My hobby is listen to music
6. where are you live ?
- I'm live on Quach Nhan Street
7 . where are you from ?
- I'm from Viet Nam
8 . what your favourite food ?
- My favourite food is chicken
9 . what your favourite drink ?
- My favourite drink is milk
10 . what subject do you ?
- I literature
11. what your favourite book / flim/ story ?
- My favourite film is spooky clown I.T
12 who is your best friend ?
- My best friend is Chien
13 how many people in your family ?
- There are five people in my family
14 . our your man or wonman ?
- I don't know
15. do you have girl friend / boyfriend ?
- No but i have a crush
16. do you have brother / sister / baby ?
- I have a big brother
17. when your birthday ?
- 03 . 12 . 2009
18.how many room in your house ?
- There are twenty rooms
19. what animal do you
- I cats and dogs
20. do you love me ?
- I don't know you
15 tháng 6 2021
1. My name is Shinichi
2. I'm 13 years old.
3. I'm fine.
4. I'm in class 7A10
5. My hobby is reading comic books.
6. I'm live in Hanoi.
7.l'm from Vietnam.
8. My favorite food is hamburger.
9. My favorite drink is orange juice.
10. I maths.
11. Book: Conan..
Film: King Kong.
12...... ( can't say)
13.5 people.
14. Your man
15.both
16. Yes.
17 .31/8/2008
18.5 room.
19. I don't have.
20. No, never.
12 tháng 2 2019
Write the time
1. A quarter to eight :7h45'
2.From half past six to eight o’clock:from 6h30 to 8h
3.From four o’clock to quarter past five :from 4 to 5h15
4.At twelve o’clock :12h
5.At ten past eight:8h10
6.At ten to eight:7h50
7.From quarter past six to s:even o’clock:from 6h15 to 7
8.At five past two:2h5
9.From seven to nine o’clock:from 7 to 9
10.From ten past four to five o’clock:from 4h10 to 5h
11.At five o’clock:5h
12.At half past seven:7h30
13.From five o’clock to half past six :from 5h to 6h30
LN
31 tháng 10 2021
sits / reads / goes/ watches/ brushes/ listens/ walks/ fixes/ hears /plays /studies/ repeats
số xấu lắm
\(\dfrac{31}{2964}\)
31/2964