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Vy Nguyễn
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Huy Thắng Nguyễn
29 tháng 10 2017 lúc 15:30

You did not invite me to the party last week

->I was not invited to the party last week.

They said that he had stolen that car

->He was said to have stolen that car.

The story was too boring for us to read

->We were too bored with the story to read it.

His teacher gave him a good mark at english yesterday

->He was given a good mark at English by his teacher yesterday.

Yến Ronnie
29 tháng 10 2017 lúc 15:30

1. I wasn't invited to the party last week

2. He was said to had stolen that car

3. We were bored when we read the story

5. He was given a good mark at english by his teacher yesterday

Nguyễn Thu Hương
20 tháng 1 2018 lúc 19:40

You did not invite me to the party last week

->I was not invited to the party last week.

They said that he had stolen that car

->He was said to have stolen that car.

The story was too boring for us to read

->We were too bored with the story to read it.

His teacher gave him a good mark at english yesterday

->He was given a good mark at English by his teacher yesterday.

Hoàng Kiều Quỳnh Anh
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nguyễn thị hương giang
10 tháng 12 2021 lúc 18:47

Câu 1.

Khi mở khóa K:

\(I_m=I_1=0,4A\)

Khi đóng khóa K:

\(I_m=I_1+I_2=0,6\Rightarrow I_2=0,2A\)

\(U_1=0,4\cdot5=2V\)

\(\Rightarrow U_2=U_1=2V\)

\(\Rightarrow U=U_1=U_2=2V\)

\(R_2=\dfrac{U_2}{I_2}=\dfrac{2}{0,2}=10\Omega\)

hà minh
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Tô Hà Thu
6 tháng 10 2021 lúc 9:37

tách ra bn oi , dài kinh khủng khiếp ó!

Thùy Dương
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QEZ
19 tháng 5 2021 lúc 21:50

vẽ lại mạch ta có RAM//RMN//RNB

đặt theo thứ tự 3 R là a,b,c

ta có a+b+c=1 (1)

điện trở tương đương \(\dfrac{1}{R_{td}}=\dfrac{1}{a}+\dfrac{1}{b}+\dfrac{1}{c}\) \(\Rightarrow I=\dfrac{U}{R_{td}}=9.\left(\dfrac{1}{a}+\dfrac{1}{b}+\dfrac{1}{c}\right)\) với a,b,c>0

áp dụng bất đẳng thức cô si cho \(\dfrac{1}{a},\dfrac{1}{b},\dfrac{1}{c}\)  \(\Rightarrow\dfrac{1}{a}+\dfrac{1}{b}+\dfrac{1}{c}\ge\dfrac{3}{\sqrt[3]{abc}}\ge\dfrac{3}{\left(\dfrac{a+b+c}{3}\right)}=\dfrac{9}{a+b+c}=9\)

\(\Leftrightarrow9\left(\dfrac{1}{a}+\dfrac{1}{b}+\dfrac{1}{c}\right)\ge81\Leftrightarrow I\ge81\) I min =81 ( úi dồi ôi O_o hơi to mà vẫn đúng đá nhỉ)

dấu ''='' xảy ra \(\Leftrightarrow a=b=c\left(2\right)\)

từ (1) (2) \(\Rightarrow a=b=c=\dfrac{1}{3}\left(\Omega\right)\)

vậy ... (V LUN MẤT CẢ BUỔI TỐI R BÀI KHÓ QUÁ EM ĐANG ÔN HSG À )

 

 

QEZ
19 tháng 5 2021 lúc 21:09

em ơi chụp cả cái mạch điện a xem nào sao chụp nó bị mất r

Linh Hoàng
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Phương Dung
24 tháng 12 2020 lúc 21:35

Who - Whom - Whose 

Combine the sentences 

1. There are 3 nurses here. They are trying to save the patients. 

There are 3 nurses who are trying to save the patients here. 

2. The students are really nerves - racking. The teachers are going to hand out their test's result. 

The students who were going to hand out their test's result by teachers are really nerves - racking.

3. The manager of the company was such an intellectual man. His professional manner makes me admire. 

The manager of the company was such an intellectual man whose professional manner makes me admire. 

4. I can't understand why you always look up to that neighbor. He just a normal man. 

I can't understand why you always look up to that neighbor who just a normal man. 

5. The English teacher is going to go aboard. I need to say goodbye to him. 

The English teacher to whom I need to say goodbye is going to go aboard.

6. The toodles are being punished. They stole the biscuits on the fridge. 

The toodles who stole the biscuits on the fridge are being punished.

7. We were texting the owner of that shop. I had bought 3 items from him. 

We who had bought 3 items from him were texting the owner of that shop.  

8. The books are torn apart. Its content is quite good. 

The books whose content is quite good are torn apart.

9. The movie director was so busy. He had to take charge of a lot of responsibilities. 

The movie director who had to take charge of a lot of responsibilities was so busy. 

10. The refugees try to go to the other countries. Their homes are lost.

 The refugees whose homes are lost try to go to the other countries.

11. I do not know that singer. I saw her on television last night.

I do not know that singer whom I saw on television last night.

13. The neighbors are cutting plants. Their flowers give off such good smell.

 The neighbors whose flowers give off such good smell are cutting plants.

14. They are filming the tiger. I have never seen it before.

They are filming the tiger which I have never seen before.

15. The writer is so prolific. She has written 3 books this year.

The writer who has written 3 books this year is so prolific.

Hoàng Ngọc Diệp Chi
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Nguyễn Lê Phước Thịnh
29 tháng 5 2022 lúc 13:07

Câu 1: A
Câu 2: B

Câu 3: D
Câu 4: A

Câu 5: C

Câu 6: B

Câu 7: A

Câu 9: B

 

Nguyễn Quỳnh Như
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Trần Nguyễn Bảo Quyên
4 tháng 8 2017 lúc 7:29

III/ rewrite each of the sentences by using the adverb clauses of result "SO"

1. We decided to leave early because the party was boring

-> The party was boring so we decided to leave early.

2. She phoned the police because she saw she wanted man in a small coffee shop

-> She saw she wanted man in a small coffee shop so she phoned the police.

3. She walked slowly because her leg was injured

-> Her leg was injured so she walked slowly.

4. Mary looked happy because she has just got good marks

-> Mary has just got good marks so she looked happy.

Phương Anh
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S - Sakura Vietnam
26 tháng 12 2021 lúc 18:50

câu hỏi đâu bn ?

arina minhanh
5 tháng 5 2022 lúc 16:39

bài đâu bn

Hoàng Kiều Quỳnh Anh
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Đỗ Tuệ Lâm
18 tháng 2 2022 lúc 12:06

tk:

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