4x - 15 = 3^2.5

4x - 15 = 3¹⁰ 

4x       = 3¹⁰ + 15

4x       = 59064

 x        = 59064 : 4

 x        = 14766

\(4x-15=3^2.5\)

\(4x-15=9.5\)

\(4x-15=45\)

\(\Rightarrow4x=45+15\)

\(\Rightarrow4x=60\)

\(\Rightarrow x=15\)

I.

1. A. /s/     B. /s/     C. /z/     D. /s/

2. A. /d/     B. /d/     C. /t/     D./d/

3. A. /tʃ/     B. /tʃ/     C. /'k/     D. /tʃ/

4. A. /u:/    B. /u:/    C. /u:/     D. /ʊ/

5. A. /ð/     B. /θ/     C. /θ/      D. /θ/

II.

6. had slept

7. goes

8. has taught

9. built

10. was cooking

III.

11. A

12. D

13. A

14. C

15. A

16. B

17. C

18. A

19. B

20. C

IV.

21. D

22. C

23. C

24. B

25. C.

https://hoc24.vn/cau-hoi/giup-minh-voi-minh-rat-biet-on-cac-ban-cam-on-cac-ban-nhieu-lam.7786092289866.    Giúp mình luôn nhé các bạn 

6. B

7. C

8. B

9. A

10. D

11. D

12. C

13. B

14. B

15. A

16. C

17. D

18a

19d

----------

1 to go

2 answering-ring

3 being - to do

4 listening-bearing

5 eating

6 walking

7 putting

8 not to speak

9 to reading

10 to see

11 to visit

12  to hear

13 to come

14. to go

15 to walk

16 saving

-----------------------

1d

2b

3a

4b

5c

\(\text{#♪◈₰♣}\)

1. không hiểu? nature/ei/ chance/a:/ gravity/e bẹt/ basic/ei/
2. D
3. C
4. B
5. A (đuôi eer trọng âm rơi vào chính nó)
6. A
7. B
8. C
9. A
10. B
11. B
12. A
13. D
14. C
15. D
16. A
17. C
18. A
19. C
20. D