Câu 1:

- phương thức biểu đạt chính : nghị luận

Câu 2:

- phương pháp lập luận : báo chí

khó nhỉ :(( 

bố mày sợ mày quá bố kéo cả lò

we go to the flower festival tomorrow

to attend the opening ceremony of the festival

I have never seen such a beautiful performance before

This show is suitable for children under the age of 10

are 1000 seats in the theater

1 for - at

2 at - with

3 for - for

4 from - to

5 of - up

6 to - from

7 on - from - for

8 between - to - from

a) \(x-\dfrac{1}{4}=-\dfrac{1}{6}\Leftrightarrow x=-\dfrac{1}{6}+\dfrac{1}{4}\Leftrightarrow x=\dfrac{1}{12}\)

b) \(\dfrac{2}{5}x-\dfrac{1}{9}=\left(\dfrac{1}{3}\right)^2\Leftrightarrow\dfrac{2}{5}x=\dfrac{1}{9}+\dfrac{1}{9}\Leftrightarrow\dfrac{2}{5}x=\dfrac{2}{9}\Leftrightarrow x=\dfrac{5}{9}\)

c) \(\left|x+\dfrac{1}{3}\right|=3\)

\(\Leftrightarrow\left[{}\begin{matrix}x+\dfrac{1}{3}=3\\x+\dfrac{1}{3}=-3\end{matrix}\right.\)\(\Leftrightarrow\left[{}\begin{matrix}x=3-\dfrac{1}{3}\\x=-3-\dfrac{1}{3}\end{matrix}\right.\)\(\Leftrightarrow\left[{}\begin{matrix}x=\dfrac{8}{3}\\x=-\dfrac{10}{3}\end{matrix}\right.\)

\(\left(a\right)\)
\(x-\dfrac{1}{4}=\dfrac{-1}{6}\)
\(x=\dfrac{1}{12}\)
/\(x+\dfrac{1}{3}\)/=3
=>    \(x+\dfrac{1}{3}=3\)    hoặc  \(-x-\dfrac{1}{3}=3\)
=>    x=\(\dfrac{8}{3}\)    hoặc x= \(\dfrac{-10}{3}\)

a: Ta có: \(x-\dfrac{1}{4}=-\dfrac{1}{6}\)

\(\Leftrightarrow x=\dfrac{1}{4}-\dfrac{1}{6}\)

hay \(x=\dfrac{1}{12}\)

b: Ta có: \(\dfrac{2}{5}x-\dfrac{1}{9}=\left(\dfrac{1}{3}\right)^2\)

\(\Leftrightarrow x\cdot\dfrac{2}{5}=\dfrac{1}{9}+\dfrac{1}{9}=\dfrac{2}{9}\)

hay \(x=\dfrac{5}{9}\)

c: Ta có: \(\left|x+\dfrac{1}{3}\right|=3\)

\(\Leftrightarrow\left[{}\begin{matrix}x+\dfrac{1}{3}=3\\x+\dfrac{1}{3}=-3\end{matrix}\right.\Leftrightarrow\left[{}\begin{matrix}x=\dfrac{8}{3}\\x=-\dfrac{10}{3}\end{matrix}\right.\)

a) \(\dfrac{3}{7}+\left(-\dfrac{5}{2}\right)+\left(-\dfrac{3}{7}\right)=\dfrac{3}{7}-\dfrac{5}{2}-\dfrac{3}{7}=-\dfrac{5}{2}\)

b) \(B=\dfrac{4^2.2^3}{2^6}=\dfrac{\left(2^2\right)^2.2^3}{2^6}=\dfrac{2^4.2^3}{2^6}=\dfrac{2^7}{2^6}=2\)

a, \(A=\dfrac{3}{7}-\dfrac{5}{2}-\dfrac{3}{7}=-\dfrac{5}{2}\)

b, \(B=\dfrac{4^2.2^3}{2^6}=\dfrac{2^4.2^3}{2^6}=\dfrac{2^7}{2^6}=2\)

\(A=\dfrac{3}{7}+(-\dfrac{5}{2})+(-\dfrac{3}{7})\)

\(=(\dfrac{3}{7}-\dfrac{3}{7})-\dfrac{5}{2} \)

\(=-\dfrac{5}{2}\)

\(B=\dfrac{4^2.2^3}{2^6}\)

\(B=\dfrac{4^2}{2^3}\)

\(B=\dfrac{16}{8}\)

\(B=2\)

câu 1 ,2 ,3 mk làm đc r nha

4. achievements

5. competitive

6. climbing

7. player

8. famous

9. information

10. professional

11. competition

12. Congratulation

13. footballer

14. useful

15. loudly

4. achievements

5. competitive

6. climbing

7. player

8. famous

9. information

10. professional

11. competition

12. Congratulation

13. footballer

14. useful

15. loudly

Bài 1.5 bạn nhé!

1.6 đây bạn nhé!

1.8)

a)Áp dụng hệ thức lượng trong tam giác vuông vào ΔABC vuông tại A có AD là đường cao ứng với cạnh huyền BC, ta được:

\(\left\{{}\begin{matrix}AB^2=BH\cdot BC\\AC^2=CH\cdot BC\end{matrix}\right.\)

\(\Leftrightarrow\dfrac{AB^2}{AC^2}=\dfrac{BH\cdot BC}{CH\cdot BC}=\dfrac{BH}{CH}\)(đpcm)

1 Because she went to bed late last night, she couldn't go to school on time

2 It rained heavily so we couldn't go to the theater

3 The wind was strong, so the tree in my garden was uprooted

4 He fell asleep while driving, so he had an accident

5 If I had a guitar here, I could sing you a song

6 If I didn't need to finish my assignment, I could help you with your homework

7 If you don't study hard, you may fail the exam

8 If there is no oil in the engine, the car will breakdown

9 If it hadn't been for your help, I couldn't have finished the report

10 If it hadn't been for her disapprova, he would have been given that job

11 The house seemed as if it had been occupied for years