tìm x,y,z biết x=3y=2z và 2x-3y+4z=48

Giúp mình với mình sẽ cho 5 star

nhân phân phối (x-6)²(x+1) _______________________ nhân phân phối (x+9)².(x-3)

IV. Complete the sentences with the suitable form of the adjectives or adverbs in brackets. 1. Tokyo is one of cities in the world. (liveable) 2. You should go by train, it would be much cheap . (cheap) 3. Universal Studios is by far place to visit in Singapore. (good) 4. The price of electronic devices in Vietnam is not that inJapan. (reasonable) 5. Today is day I’ve had in a long time. (bad) 6. Your team is much today than last week. (lucky) 7. Of the four participants, Bill is experienced. (little) 8. I didn’t want to wake anybody up, so I came in I could. (quietly) 9. I ran pretty far yesterday, but I ran even a lot today. (far) 10. Singapore is the second destination in Asia. (popular) V. Complete the text with the most suitable form of the adjectives in brackets. Add the when necessary. New York City (NYC) is considered as one of (1) (good) places to livein the world. The city of New York is (2) (densely populated) in the US witha population of about 8.55 million spread over an area of 305 square miles. Although NewYork and San Francisco are probably two of (3) (iconic) cities in America,the former seems to attract more tourists thanks to a wide range of landscapes and activities it offers. In addition, its standard of living is also a strong point. It’s hard tobelieve, but rent is actually (4) (cheap) than other cities. It’s a fun fact thatcity life isn’t just (5) (good), it’s (6) (lengthy): NYC residentslive about two years (7) (long) than the national average. Remarkably, NYChas the second (8) (large) Jewish population in the world – a massiveinfluence on the city’s identity. This is the city that most people surveyed said they would want to visit this year.

Lấy 2 ml nước cất nên sử dụng dụng cụ nào dưới đây là thích hợp nhất: A.Cốc đong có dung tích 50 ml. B.Ống pipet có dung tích 5 ml. C.Ống nhỏ giọt có dung tích 1 ml. D.Ống thí nghiệm có dung tích 10 ml.

tìm x,y,z biết x/6=y/5;y/3=z/2 và 2x-3y+4z=93

Bóng của một cột cờ trên mặt đất dài 4m. a) Biết cột cờ cao 7m, tính góc mà tia sáng mặt trời tạo với mặt đất. b) Giả sử tia nắng tạo với cột cờ một góc 38 độ. Tính khoảng cách từ đỉnh cột cờ đến bóng của nó trên mặt đất.

Calli " Buồn ghê , huhu " ._. TvT

Choose the best answer. 1.Jack asked me _____. A.where do you come from? B.where I came from C.where I came from D.where did I come from? 2.She asked me _____ I liked pop music. A.when B.what C.if D.x 3.The doctor ____ him to take more exercise. A.told B.tell C. have told D. are telling 4.I wanted to know_____ return home. A.when would she B. when will she C. when she will D. when she would 5.Marry told me that her father____ a race horse. A.owns B.owned C. owning D. A and B 6.The doctor _______ him to take more exercise. A. told B. tell C. have told D. are telling 7.I told you ______ to switch off the computer. A. don’t B. not C. not to D. to not 8.I said that I had met her ______ . A. yesterday B. the previous day C. the day D. the before day. 9.The man asked the boys ______ . A. why did they fight B. why they were fighting C. why they fight D.why were they fighting 10.“______the door”, he said. A. please open B. open pleased C. please to open D. please, opening 11.I wanted to know ______ return home. A. when would she B. when will she C. when she will D. when she would 12.Peter said he was leaving for Paris ______. A. next week B. the week previous C. following week D. the following week 13.She advised me _______ an apple everyday to stay healthy. A. eating B. I should eat C. to eat D. please, eat 14.She wanted to know ______. A. what was happening B. was happening C. it was happening D. was happening what 15.My father asked me _____ of the film. A. what do you think B. what I think C. what did you think D. what I thought

VII. Complete the sentences with correct form of verbs. 1. People tend (think) that the problem will never affect them. 2. My parents advised me (learn) English as soon as possible. 3. Many young people spend the whole day (play) online games. 4. It took me a whole day (travel) to Dalat last week. 5. I can’t see the attraction of (sit) on a beach all day. 6. A positive aspect of education is that it contributes to (confirm) one’s identity. 7. I like to listen to the birds (sing) when I get up early in the morning. 8. The team has tried their best (perform) in the final round. 9. Do the plants need (water) every day? 10. If you can, please (give) me more information about the kids club at A1Raha Beach Hotel. VIII.Complete the second sentence so that it has the same meaning as the first sentence. 1. I’ve never had to wait this long for a bus before. → This is 2. Remember to take note of what the tour guide said. → Remember to put 3. It took us more than 3 hours to discover the inner Hanoi. → We spent