Cảm ơn trước nhé Ai nhanh sẽ đc vốt +ctlhn+co

Chế độ nô lệ ở Mĩ bị xóa bỏ dưới thời của tổng thống: A Bill Clinton. B Lincol. C Oasinhton. D B. Obama.

Cố gắng giúp mk với hứa vote 5 *

Chứng minh rằng với số tự nhiên n>2 thì A = 1/1^2+1/2^2+1/3^2+1/4^2+...+1/n^2 không là số tự nhiên

Tại sao chiến tranh giành độc lập ở Bắc Mĩ lại có tính chất của một cuộc cách mạng tư sản? A Vì nó nhằm đấu tranh giành độc lập. B Vì nó nhằm xóa bỏ chế độ phong kiến. C Vì nó xóa bỏ ách cai trị của Anh, xây dựng chế độ tư bản ở Mĩ. D nhằm xóa bỏ rào cản của thực dân Anh, đưa nước Mĩ bước vào thời kì phong kiến.

Chứng minh người dân việt nam luôn sống theo đạo lí uống nước nhớ nguồn viết ngắn một tý giúp mình nha

Giải mình mik ba câu này ạ căn 4x^2-4x+1=căn x^2-2x+1

Vietnam’s New Year is celebrated according to the Lunar calendar. It is especially known as Tet Nguyen Dan, or Tet. It begins between January twenty- first and February nineteenth. The exact date changes from year to year. Vietnamese people usually make preparations for the holiday several weeks beforehand. They tidy their houses, cook special food, clean and make offerings on the family altars. On the New Year’s Eve, people sit up to midnight to see New Year in, then they put on new clothes and give one another the greetings of the season. Tet lasts ten days. The first three days are the most important. Vietnamese people believe that how people act during those days will influence the whole year. As a result, they make every effort to avoid arguments and smile as much as possible. 1. What is Vietnam’s New Year known as? A. Tet Nguyen Dan B. Mid-Autumn Festival C. Not given D. A & B are correct 2. Is Tet celebrated according to the Lunar calendar? A.Yes B. No C. Not given D. All are correct 3. When does the Lunar New Year begin? A. between January twelfth and March nineteenth B. between January twelfth and April nineteenth C. between January twelfth and February nineteenth D. between January twenty- first and February nineteenth 4. What do Vietnamese people usually do to prepare for Tet? A. put on new clothes and give one another the greetings of the season. B. tidy their houses, cook special food, clean and make offerings on the family altars. C. effort to avoid arguments and smile as much as possible D. sit up to midnight to see New Year in. Ex2. Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits each numbered blank. Choosing between the city and the country Modern technology is making some people think again about living in a big city. Young people want to live in big cities (1)____several reasons. There are more opportunities for careers in large cities. There are also more stores and a greater variety of entertainment (2)___________. However, some people do not like the (3) _____________, noise and crowds in bigg cities. They would prefer to(4)____________ in a quiet town in the country, but their job is in the city. These are the people that will (5)____________the most from modern technology. Travel is becoming faster and cheaper with high-speed subways, trains and airplanes. The biggest technological advance is with computers and the Internet. Many professionals are finding out they do not have to go to an office anymore.They can do their work at home and send it to their company over the Internet. More and more people will be able to live (6)______they want to and not have to make sacrifices in their careers. Question 1:A. with B. for C. in D. on Question 2.A. choose B. chosen C. choices D. choice Question 3.A. pollute B. polluting C. pollution D. polluted Question 4. A. live B. lives C. living D. lived Question 5.A. benefit B. take C. do D. make Question 6.A. when B. where C. what D. who

Tính phân tử khối của Glucozo biết phân tử gồm 6C, 6H, 6O.

Hiện nay ông hơn cháu 62 tuổi.2 năm nưa tổng số tuổi ông và cháu là 82 tuổi. hỏi 2 năm trước ông bao nhiêu tuổi?