A= 5x+ /5-x/+ 5 khi x<5

B= 5x+10+/3x/ khi x ≥ 0 và x< 0

C= /x-3/ -3x+15 khi x≤0 và x>0

D=/x-3/ - 3x+ 15 khi x≥3 và x< 3

E= 5x+6+ /x+2/ khi x≥-2 và x<-2

 HELPPPPPPP!!!!!!!!!!!!!!!!!!!!!!

eyyyyyy, cảm ơn bro nhé. 

một khu vườn hcn có chiều dài gấp 3 lần chiều rộng. Nếu tăng chiều rộng 9m và giảm chiều dài 3 m thì diện tích khu vườn tăng 213m2. Tìm chu vi khu vườn lúc đầu

Ai giải giúp mình với ạ!!!!!!!!!!!!!!

1. “Where is the post office?” She asked me ............................................................................................... 2. “Why is Julie sad?” She asked me............................................................................................................. 3. “What's for dinner?” She asked me.......................................................................................................... 4. “ Who is the woman in the red dress?” She asked me............................................................................ 5. “How is your grandmother?” She asked me............................................................................................. 6. “When is the party?” She asked me ......................................................................................................... 7. “How much is the rent on your flat?” She asked me................................................................................ 8. “Where are the glasses?” She asked me .................................................................................................. 9. “How is the weather in Chicago?” She asked me ..................................................................................... 10. “Who is the Prime Minister of Canada?” She asked me......................................................................... 11. “Where do you usually go swimming?” She asked me........................................................................... 12. “What does Luke do at the weekend?” She asked me........................................................................... 13. “Where do your parents live?” She asked me........................................................................................ 14. “Who do you go running with?” She asked me...................................................................................... 15. “When does Lucy get up?” She asked me .............................................................................................. VI. Reported Questions 1. “Where is he?” She asked me................................................................................................................... 2. “What are you doing?” She asked me ...................................................................................................... 3. “Why did you go out last night?” She asked me....................................................................................... 4. “Who was that beautiful woman?” She asked me ................................................................................... 5. “How is your mother?” She asked me ...................................................................................................... 6. “What are you going to do at the weekend?” She asked me................................................................... 7. “Where will you live after graduation?” She asked me............................................................................ 8. “What were you doing when I saw you?” She asked me ......................................................................... 9. “How was the journey?” She asked me.................................................................................................... 10. “How often do you go to the cinema?” She asked me........................................................................... 11. “Do you live in London?” She asked me ................................................................................................. 12. “Did he arrive on time?” She asked me .................................................................................................. 13. “Have you been to Paris?” She asked me............................................................................................... 14. “Can you help me?” She asked me ......................................................................................................... 15. “Are you working tonight?” She asked me............................................................................................

-Nước Đại Việt ta từ khi lập quốc đến giờ, nền chính học đã bị thất truyền

-Cúi xin từ nay ban chiếu thu cho thầy trò trường học của phủ, huyện, các trường tư, con cháu các nhà văn võ, thuộc lại ơ các trấn cựu triều, đều tùy đâu tiện ấy mà đi học

Xác định kiểu hành động nói của 2 đoạn trên

1.          He was writing to his friend when he __________a noise.

A. was hearing            B. heard                       C. had heard                D. hears

2.          I __________many people since I came here in June.

A. met                         B. has met                   C. was meeting           D. have met

3.          We __________ maths at this time last week.

A. were learning         B. are learning            C. was learning           D. learnt

4.          She was playing games while he __________a football match.

A. watched                  B. watches                   C. was watching          D. watching

5.          She __________to Ho Chi Minh city last year.

A. goes                        B. has gone                 C. go                           D. went 

6.          Since we came here, we ______ a lot of acquaintances.

A. have had                 B. had C. have            D. are having

7.           __________he playing football now?

A. Will                        B. Does                       C. Was                        D. Is 

8.          Every morning, I often sit in my garden and____ to my nightingale sing.

A. listening                 B. listen                       C. listened                   D. listens

9.          They ____the exercise when their teacher comes back.

A. are doing                B. will be doing          C. do                           D. would do

10.      By Christmas, I ____ for the company for five years.

A. shall have been working                B. shall work

C. have been working                         D. shall be working

I. Passive Voice:

1.  My grandmother is knitting a new sweater.

Ø   

2.  You mustn't use this machine after 5.30 o'clock.

Ø   

II. Conditional Sentences:

1.  He can't go out because he has to study for his exam.

If

2.  She is lazy so she can't pass the exam.

If

III. Wish Sentences:

1. I don't understand this point of grammar. I wish I ______ it better.

A. understood                 B. would understand     

C. had understood          D. understands

2. It never stops raining here. I wish it ______ raining.

A. stopped                      B. would stop                  C. had stopped    D. will stop

3. I miss my friends. I wish my friends ______ here right now.

A. were                           B. would be                     C. had been         D. was

4. I should never have said that. I wish I ______ that.

A. didn't say                    B. wouldn't say               C. hadn't said      D. says

5. I speak terrible English. I wish I ______ English well.

A. spoke                          B. would speak               C. had spoken     D. speaks

Một người đi xe máy từ A-> B với vận tốc 30km/h. Đến B người đó làm việc trong 1 giwogff rồi quay về A với vận tốc 24km/h. Biết thời gian tổng cộng hheet s5h 30'. Tính AB

b