11. My sister walks to school.
12. The bank is near the post office.
13. Our garden has many flowers.
14. Ba doesn't live outside the city.
15. Nma doesn't live in the countryside.

11 My sister walks to school

12 The bank is near the post office

13 Our garden has many flowers

14 Ba doesn't live in the countryside

15 Nam doesn't live in the countryside

6A=5.7.6+7.9.6+9.11.6+11.13.6+13.15.6+...+99.101.6

6A=5.7.(9-3)+7.9.(11-5)+9.11.(13-7)+11.13.(15-9)+13.15.(17-11)+...+99.101.(103-97)

6A=-3.5.7+5.7.9-5.7.9+7.9.11-7.9.11+9.11.13-9.11.13+11.13.15-11.13.15+13.15.17-...-97.99.101+99.101.103

6A=99.101.103-3.5.7 => A=(99.101.103-3.5.7)/6

11. She’d like to stay with me this weekend.

aShe want to stay with me this weekend.

12. She told me that she’d buy a book for me when she got back.

aShe promised to buy a book for me when she got back.

13.Hue has no intention of telling Dung about this .

aHue doesn’t intend to tell Dung about this.

14. Some of students would like to study English harder but they can’t.

aSome of students wish they could study English harder

15. They are going to SaPa next month.

aThey have an intention of going to Sapa next month.

16. Hai doesn’t like being kept waiting too long.

aHai resents being kept waiting too long.

17. Cuong said he couldn’t go to the park with Vy.

aCuong said: "I can't go to the park with Vy".

18. Mike had an interest in learning North American history in his school days.

aMike was interested in learning North American history in his school days.

19. Do you think you could give me a hand to move the sofa?

aWould you mind giving me a hand to move the sofa?

20. I think Jelly really likes Simon

a Jelly is thought to like Simon .

Đè thừa một số \(\frac{25}{156}\),mk ko lại đề bài nhé

\(A=1-\frac{2+3}{2\cdot3}+.....+\frac{11+12}{11\cdot12}-\frac{12+13}{12\cdot13}\)

\(=1-\frac{1}{2}-\frac{1}{3}+\frac{1}{3}+\frac{1}{4}-...+\frac{1}{11}+\frac{1}{12}-\frac{1}{12}-\frac{1}{13}\)

\(=\frac{1}{2}-\frac{1}{13}=\frac{11}{26}\)

Thanks "Blue Moon" nhìu nha

\(N=\dfrac{2^{19}\cdot3^9-3\cdot3^8\cdot5\cdot2^{18}}{3^9\cdot2^9\cdot2^{10}-2^{20}\cdot3^{10}}\)

\(=\dfrac{2^{18}\cdot3^9\cdot\left(2-5\right)}{3^9\cdot2^{19}\left(1-2\cdot3\right)}=\dfrac{1}{2}\cdot\dfrac{-3}{-5}=\dfrac{3}{10}\)

\(P=\dfrac{8\cdot10+8\cdot24+8\cdot560}{6\cdot45+6\cdot108+6\cdot120\cdot21}=\dfrac{8\left(10+24+560\right)}{6\left(45+108+120\cdot21\right)}=\dfrac{4}{3}\cdot\dfrac{2}{9}=\dfrac{8}{27}\)

\(\frac{1}{9}.\frac{2}{145}-\frac{13}{3}:\frac{1}{145}+\frac{2}{145}=\frac{2}{145}\left(\frac{1}{9}+1\right)-\frac{13}{3}:\frac{1}{145}=\frac{2}{145}.\frac{10}{9}-\frac{1885}{3}=\frac{4}{216}-\frac{1885}{3}\)

\(=-\frac{33929}{54}\)

\(10+11+12+13+14+15+16+17+18+19=145\)

bằng 135 nhé

K mk nha

145 bạn nhé !