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31 tháng 10 2021

-10083, học tốt!

31 tháng 10 2021

-189917 nhé

TL

Đáp án Đúng là D

Ở câu 9

xin k

Hok tốt

TL

Câu 10 :

Chắc chắn 100% đáp án D nha

Hok tốt

31 tháng 10 2021

TL ;

1 + 3 - 3 + 4 - 5 + 2 = - 10

AE là ko có gái à

TL

Bao nhiêu bit tạo thành một byte?

A. 8.B. 9.C. 32.D. 36.

k mk nha

hok tốt

31 tháng 10 2021

Bao nhiêu bit tạo thành một byte ?

A . 8

B . 9

C . 32

D . 36

Bài tập 2: Chọn câu trả lời đúng nhất để hoàn thành những câu sau.1. We can’t have our car now; ___________ at the garage.A. it’s still being repaired B. it’s still repairing C. it’s still repaired D. it’s still being repairing 2. John__________ you when he has finished the report.A. was calling B. was being called C. will call D. will be called3. When I returned, I found that my car __________away.A. had been pulling B. has been pulling C. has been pulled D....
Đọc tiếp

Bài tập 2: Chọn câu trả lời đúng nhất để hoàn thành những câu sau.
1. We can’t have our car now; ___________ at the garage.
A. it’s still being repaired B. it’s still repairing C. it’s still repaired D. it’s still being repairing 


2. John__________ you when he has finished the report.
A. was calling B. was being called C. will call D. will be called


3. When I returned, I found that my car __________away.
A. had been pulling B. has been pulling C. has been pulled D. had been pulled


4. The house ____________six decades ago.
A. was built B. was building C. will be built D. was to be built


5. The building ____________
A. is being demolished B. is demolishing C. has demolished D. been demolished


6. While I ____________this morning , I met Jane .
A. shop B. shopping C. was shopping D. am shopping


7. Wait here until I ____________ you.
A. am calling B. am going to call C. call D. will call


8. This room __________for ages.
A. hasn’t used B. hasn’t been used C. hadn’t used D. hadn’t been used


9. I’m going to have my house _____________ this weekend.
A. is redecorated B. redecorated C. will be redecorated D. redecorate


10. I’d like to have my shoes _____________ at once.
A. repair B. repairing C. repaired D. being repaired


11. My shoes need _____________
A. to clean B. cleaning C. to be cleaned D. B & C


12. Pupils are made _____________ hard at school.

A. work B. to work C. working D. worked


13. The factory is said _____________ in a fire two years ago.
A. being destroyed B. to have been destroyed
C. to have destroyed D. to destroy


14. He is said ______________ a good student in the class
A. being B. to be C. to have been D. having been


15. English ______________ all over the world.
A. speaks B. is speaking C. was spoken D. is spoken

2
31 tháng 10 2021

1 . A

2 . C

3 . A

4 . B

5 . C

6 . A

7 . C

8 . A

9 . C

10 . A

11 . C

12 . A

13 . D

14 . C

15 . D

6 tháng 12 2021

1A, 2C, 3D, 4A, 5A, 6C, 7C, 8B, 9B, 10C, 11D, 12B, 13B, 14B, 15D

cô giáo mk chữa r nha. xin tích nè

Bài tập 2: Chọn câu trả lời đúng nhất để hoàn thành những câu sau.1. We can’t have our car now; ___________ at the garage.A. it’s still being repaired B. it’s still repairing C. it’s still repaired D. it’s still being repairing2. John__________ you when he has finished the report.A. was calling B. was being called C. will call D. will be called3. When I returned, I found that my car __________away.A. had been pulling B. has been pulling C. has been pulled D. had...
Đọc tiếp

Bài tập 2: Chọn câu trả lời đúng nhất để hoàn thành những câu sau.
1. We can’t have our car now; ___________ at the garage.
A. it’s still being repaired B. it’s still repairing C. it’s still repaired D. it’s still being repairing
2. John__________ you when he has finished the report.
A. was calling B. was being called C. will call D. will be called
3. When I returned, I found that my car __________away.
A. had been pulling B. has been pulling C. has been pulled D. had been pulled
4. The house ____________six decades ago.
A. was built B. was building C. will be built D. was to be built
5. The building ____________
A. is being demolished B. is demolishing C. has demolished D. been demolished
6. While I ____________this morning , I met Jane .
A. shop B. shopping C. was shopping D. am shopping
7. Wait here until I ____________ you.
A. am calling B. am going to call C. call D. will call
8. This room __________for ages.
A. hasn’t used B. hasn’t been used C. hadn’t used D. hadn’t been used
9. I’m going to have my house _____________ this weekend.
A. is redecorated B. redecorated C. will be redecorated D. redecorate
10. I’d like to have my shoes _____________ at once.
A. repair B. repairing C. repaired D. being repaired
11. My shoes need _____________
A. to clean B. cleaning C. to be cleaned D. B & C
12. Pupils are made _____________ hard at school.
A. work B. to work C. working D. worked
13. The factory is said _____________ in a fire two years ago.
A. being destroyed B. to have been destroyed
C. to have destroyed D. to destroy
14. He is said ______________ a good student in the class
A. being B. to be C. to have been D. having been
15. English ______________ all over the world.
A. speaks B. is speaking C. was spoken D. is spoken

3
31 tháng 10 2021

bạn ơi bạn đặt dấu cách giữa các câu hỏi đi

khó nhìn quá

31 tháng 10 2021

1 . A

2 . C

3 . A

4 . D

5 . A

6 . A

7 . D

8 . A

 9 . A

10 . C

11 . A

12 . C

13 . A

14 . C

15 . A

31 tháng 10 2021

Bài 3 : Cho phép làm tắt 1 xíu

Áp dụng tc của dãy tỉ số bằng nhau ta có :

\(\frac{y+z+1}{x}=\frac{x+z+2}{y}=\frac{x+y-3}{z}=\frac{1}{x+y+z}=2\)

\(\Rightarrow x+y+z=0,5\)

\(\Rightarrow\frac{0,5-x+1}{x}=\frac{0,5-y+2}{y}=\frac{0,5-z-3}{z}=2\)

\(\Leftrightarrow\hept{\begin{cases}x=\frac{1}{2}\\y=\frac{5}{6}\\z=\frac{-5}{6}\end{cases}}\)

31 tháng 10 2021

Bài 4 :

Đặt \(\frac{a}{2022}=\frac{b}{2021}=\frac{c}{2020}=k\)

\(\Leftrightarrow\hept{\begin{cases}a=2022k\\b=2021k\\c=2020k\end{cases}}\)

Ta có : 

\(4\left(a-b\right)\left(b-c\right)\)

\(=4\left(2022k-2021k\right)\left(2021k-2022k\right)\)

\(=4\left(-k\right)\left(-k\right)\)

\(=4k^2\left(1\right)\)

Ta lại có :

\(\left(c-a\right)^2=\left(2022k-2020k\right)^2\)

\(=\left(2k\right)^2=4k^2\left(2\right)\)

Từ ( 1 ) và ( 2 ) => ĐPCM