12x - 33 = 3⁵

=> 12x - 33 = 243

=> 12x         = 276

=>     x         = 23

18. She enjoys raising money for the poor

19. He was tired, so he went to bed early

20. You should eat less junk food

1. a

2. c

3. b

4. d

5. b

6. a

7. a

8. b

9. b

10. c

11. a

1.a

2. d

3. c

4. a

5. b

6. d

7.c

8. b

9. b

10.a

1. I'll provide structure of sentences, passive voice, tenses in English and listening, speaking and writing skills. I only teach the basics because my understanding of English is not very wide.

2. I think it is listening and speaking skills. My listening and speaking are very bad.... and my vocabulary too.

3. Yes, i think.

\(A=\dfrac{41}{50}=\dfrac{82}{100}\)

\(B=0,75=\dfrac{3}{4}=\dfrac{75}{100}\)

\(C=0,8=\dfrac{4}{5}=\dfrac{80}{100}\)

\(D=\dfrac{18}{25}=\dfrac{72}{100}\)

Ta thấy 72<75<80<82

=> D nhỏ nhất

d

okay 

Ta thu được cát

Chiều cao hình bình hành là

 \(18\times\dfrac{1}{3}=9\left(cm\right)\)

Diện tích hình bình hành là;

\(18\times9=162\left(cm^2\right)\)