x + 12 = -5 - x Tim các so nguyên x biết

Muốn cho việc ăn uống, sử dụng thực phẩm có tác dụng tốt đến sức khoẻ và thể lực, cần phải đảm bảo chất dinh dưỡng thực phẩm như thế nào?

Liệt kê và tính tổng tất cả các số nguyên x, biết : -8 < x < 9

Giải phương trình : a, x(x-10)+(2x-20)=0 giúp em với e quên cách lm r ạ

Mọi người giúp mình 4 với,mình sắp nộp rồi

Giúp mk đi hứa vote 5 sao 2n+7là bội của n-3

Em hãy tìm hiểu và trình bày về quá trình sản xuất các loại nước chấm có ứng dụng phân giải protein

Mình cần gấp! Các bạn nhớ cho mình lời giải và phép tính nữa nhe. Cám ơn các bạn rát nhiều!

I/ Trắc nghiệm: Chọn câu trả lời đúng nhất 1. The weather .................. nice yesterday. a. is b. was c. will be d. has been 2. It's difficult ................ your direction. a. to follow b. following c. to following d. followed 3. Would you mind .............. in the front of the Taxi, Mark? a. sit b. to sit c, sitting d. siting 4. The boy ................. over there is my brother. a. stand b. stood c. standing d. being stood 5. I was cooking for dinner ......................................... a. Then the phone rang b. then the phone was ringing c. When the phone rang d. when the phone was ringing. 6. The leader said that ................... to award the prize to you . a. He is pleasing b. he was pleasing c. he is pleased d. he was pleased 7. On Christmas Eve, people often ...................... a tree a. are decorated b, were decorated c. decorating d. decorate 8. He asked me .................................. a. Where I like coffee or not b, Whether I liked coffee c. What I liked coffee d, Which I liked coffee 9. What's was wrong with your printer? a. It didn't work b, It's doesn't c, It hasn't work d, It won't work. 10. The Statue of Liberty was ................. to the USA by the French. a. contructed b, designed c, completed d, presented II/ Đọc đoạn văn và làm các bài tập. The position with computer is very similar today. A few years ago, computers (1) .....................very large and expensive. Business managers and rich people ordered them but they (2) ..................... know how to use them. In many countries, however the situation (3) ..................... now completely changed. A lot of people not only own microcomputers but also know how (4) ...................... them. a. Chọn từ đúng cho mỗi chỗ trống 1, a. were b, are c, have been d, is 2, a, don't b, doesn't c, not d, didn't 3, a, has b, have c, had d, are 4, a, used to b, to use c, using d, used b Trả lời câu hỏi sau: 1. What were computers like a few years ago? .................................................................................................. 2. How about the computers now? .................................................................................................. III/ Viết lại các câu sau theo gợi ý: a, To go swimming is interesting It's .............................................................................................................. b, I kicked the ball in to the goal yesterday. The ball ......................................................................................................

giúp mình với b13, 14,16,17,18,19,20 bài 13: (a+4) chia hết (a-1) nha