Bài 2: Một bể bơi có chiều dài 12m, chiều rộng 5m và sâu 2,75m. Hỏi người thợ phải dùng bao nhiêu viên gạch men để lát đáy và xung quanh thành bể đó? Biết rằng mỗi viên gạch có chiều dài 25cm, chiều rộng 20 cm và diện tích mạch vữa lát không đáng kể. Các thần đồng toán học giải giúp mình với !

neu phuong phap hoa hoc de nhan biet Nahco3 va Nacl viet pthh chung minh

giải phương trình tích 2x ³-5x ²+3x=0

Read the following passage and mark the letter A, B, C, or D to indicate the answer to each of the question. Practical stress management can help students deal with their worries and become more productive, competent and efficient. First of all, students must be able to design and stick to a timetable. Choose a relaxing break between work and study, even if it’s just taking out time to breathe. In addition, a healthy lifestyle is essential for students. Let’s drink more water as well as take out time to get some air and exercise. Furthermore, organization is very important in academic life for dealing with stress. By keeping academic notes organized, turning in assignments on time, and keeping track of all deadlines, stress can be reduced to a great extent. Stress can also get worse if a person feels lonely. Therefore, by letting out all your thoughts to someone you trust, you immediately feel a lot better. However, if you feel extremely stressed out, take a break and do something you love. You can avoid this anoyance by painting or listening to music, doing something you enjoy can cheer up your mood and distract you from a stressor. It’s about time that we students accept that we can achieve just as much in life without all the stress. 4 Question 34: Which could be the best title of the passage? A. Take time for reflection on your progress. B. Ease your soul and your mind. C. Stay away from other people. D. Take a break and do what you enjoy. Question 35: The word “extent" in paragraph 1 mostly means______. A. deadline B. area C. assignment D. stress Question 36: The phrase "the annoyance" in paragraph 1 refers to ______. A. break B. time C. stress D. deadline Question 37:What can students do to lead a healthy lifestyle? A. Visit their doctor as scheduled. B. Not to put much pressure on time management. C. Follow the timetable strictly. D. Go outside for fresh air, do regular exercises and drink more water. Question 38:Which of the following sentences is TRUE? A. You should stay alone when being under pressure. B. When you feel lonely, you should grab someone to talk. C. The more lonely you are, the more stress you can have. D. It is believed that stress can control itself.

Giải hộ mik 2 bài này với ạ😭😭😭

4,484 : 1,9 ( Trình bày cả cách làm )

Cau 3 (héc-ta) 160 138 130 121 109 2007 2009 2010 2012 2013 nam Noui ta thong kẻ diện tich trong lua cuamột da phượng trong các răm tính theo héc:ta rối biểu piễn thành biu để etrên Dien cch trông iàat chất trong các năm la bao nhiêu (hec-ta)? A 160 B.138 C 121 D109 111

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