MN giúp mình Giải bằng cách lập phương trình nha

tìm GTLN của biểu thức : |3x+2|-|2020-3x|

Viết bài văn ngắn ghi lại ấn tượng của em trong buổi đến trường khai giảng lần đầu tiên. Ko chép mạng ạ.

Choose the best answer from A, B, C or D to complete each of the following sentences. 1. _______ July 20,1969, Neil Armstrong was the first human to step _______ the moon. A. On; on B. In; on C. In; in D. At; at 2. Her daughter has _______. A. a short black hair B. a black short hair C. short black hair D. black short hair 3. David can speak English ________ because he practices speaking it every day A. very good B. very hard C. very well D. very badly 4. The weather in developing countries is becoming _______. A. bad and bad B. worse and worse C. worst and worst D. the worst 5. When I lived in the city, I often went to work late because of _______ in rush hours. A. noise B. pollution C. traffic jam D. people 6. Neither they nor she _______ the liveshows. A. like B. don’t like C. likes D. not like 7. She _______ a bath when they came. A. had B. was having C. is having D. has 8. Every year, Mid - Autumn Festival _______ for children. A. is organized B. organizes C. is organizing D. organized 9. Do you mind if I _______ TV while eating lunch? A. watch B. watched C. am watching D. was watching 10. My friend _______ the answer to the question now. A. is known B. know C. is knowing D. knows

choose the best answer to complete the sentence 1 . The students at my school can ....... quietly in the library in the afternoon . A . do B . have C . study D . meet 2 . Mr Buong , my teacher ........ morning exercise evey day . A . plays B . does C . studies D . play 3 . We don't usually ............ homework on saturday . A . play B. have C . work D . study 4 . Do you often .......... team games during the break ? A . play B . do C . has D. have 5 . I have two tests tomorrow , but I don't have much time to .......... A . study B . have C. do

tìm GTNN của biểu thức : |2x+1|+|x-y+1|, b: |x+2|+1/2.|2x-1| các cao nhân giúp em với ạ

bbbbbbbbbblàm giúp mk bbbbbbbbbb

giúp mik đc ko cần gấp hứa vote 5 sao

khoảng cách từ 2 bến sông A và B là 48 km. 1 ca-nô đi từ A đến B ,rồi quay lại bến A. Thời gian cả đi và về là 5 giờ (ko tính thời gian nghỉ ) .tính vận tốc của ca nô khi nước yên lặng ,biết vận tốc của dòng nước là 4km/h giải hộ mình nha

Complete this conversation using sentences marked by A-H. Write in your answers part. There are three extra sentences which you do not need to use. John: Hi, Lan. This is my family.. Lan: (1) _______. How do you do? Mrs.Smith: How do you do? It's nice to meet you finally, Lan. Lan: (2) _______? I need to call a taxi for us. Mrs. Smith: No problem. How long (3) _______ to go to the city center? Lan: It would take about (4) _______. My house is near Hoan Kiem Lake. Mrs. Smith: Oh. (5) _______,Lan? Lan: It is the Temple of Literature. It is our first university. Mrs.Smith: Interesting. It is very beautiful. A. Where do you live? B. half an hour C. How are you? D. Welcome to Viet Nam E. Would you mind waiting for a moment? F. what is it G. would it take H. I'd like you to meet my mother and my brother, John