một người bỏ ra 500 000 đồng tiền vốn mua rau. Sau khi bán hết số rau, người đó thu lại được 610 000 đồng. Hỏi người đó lãi bao nhiêu tiền và số tiền lãi đó bằng bao nhiêu % tiền vốn

Giúp em vs ạ, em chỉ còn 30 thui

cho hàm số :y=kx+2k+1 (d) a) tìm k để (d) cắt trục tung tại điểm có tung độ bằng 2 căn 3 b) tìm k để (d) cắt trục hoành tại điểm có hoành độ bằng 1 c) CMR: với mọi k lớn hơn hoặc = 0 thì tập họp các đường thẳng (d) luôn đi qua 1 điểm cố định . Xác định tọa độ của điểm cố định đó d) tìm k để (d) đi qua A( -2 ; 1/2)

Giúp mình bài này vs ạ cảm ơn mng

giải các phương trình sau a) $\sqrt[]{5}$ x -$\sqrt[]{45}$=0 b) x (x+2) - 5=0 2) Cho hàm số y = f(x) = $\frac{x^{2} }{2}$ a) Tính f(-1) b) điểm M ($\sqrt[]{2}$ ; 1 ) có nằm trên đồ thị hàm số không ? Vì sao

Hộ mik vs ạ 🙆🙆 , mong mn giúp câu này mik đag cần gấp

tìm giá trị nhỏ nhất của P=[(cănx)-5]/[(cănx)+3] (đk:x≠0, x≠9,x≠25)

Name: Class: 7…... ENGLISH 7 – AFTER UNIT 11 I/ Circle the word whose underlined part is pronounced differently from the others (1p) 1. A. solar B. power C. eco-friendly D. hydro 2. A. pedal B. invent C. expensive D. plentiful II/ Circle the word which has a different stress pattern from the others (1p) 3. A. appear B. pilot C. pollute D. replace 4. A. abundant B. imagine C. solution D. driverless III/ Choose the best option (3p) 5. I think perhaps we ______ flying cars soon. A. will have B. will be having C. are going to have D. are having 6. Does that red motorbike belong to your mother? - No, ______ is white. A. she B. her C. hers D. mine 7. We should try to make the world greener by using vehicles that are ______ . A. environmental friendly B. environmentally friendly C. friendly environment D. friendly environmental 8. Mai usually goes to school ______ bus but yesterday she came ______ her dad’s car. A. in / on B. on / in C. by / in D. by / by 9. At this time next week, we ______ a wind turbine in our garden. A. install B. have installed C. will install D. will be installing 10. Natural gas is a non-renewable source of energy and it may ______ soon. A. run out B. run down C. use up D. use over IV/ Give the correct form of the words in brackets (2p) 11. We couldn’t see the airplane because it _____________ behind the cloud. (appear) 12. Your idea is really _____________ , however, I don’t think it will come true soon. (imagine) 13. Vesak Day is a _____________ festival for those who follow Buddhism. (religion) 14. The traffic in some cities is so _____________ that it is difficult to see a solution. (chaos) V/ Write questions for the underlined parts (1.5p) 15. The highlight of the festival is the tomato fight. 16. The Songkran Festival is usually celebrated between 13 and 16 of April. 17. It costs about $500 to join Glastonbury Festival. VI/ Rewrite the following sentences, beginning with the given words (1.5p) 18. We will plant more trees to reduce the carbon dioxide. More trees 19. I hope they will choose John for the school’s football team. I hope John 20. The local government will build a power station here next year.

Mark the letter A, B, C, or D to indicate the correct answer to each of the following questions. 8. Don’t blame me. I______ him only if he hadn’t been driving so fast. A. will have followed B. had followed C. would have been able to follow D. could follow 9. The panda’s______ habitat is the bamboo forest. A. nature B. natural C. naturalized D. naturally 10. Could you please ______an appointment for me to see Mr. Smith? A. do B. take C. make D. get 11. We have had the roof of our house______. A. replace B. replaced C. to replace D. been replaced 12. If everyone of US______ the traffic rules, the road will be much safer. A. obey B. obeys C. obeyed D. will obey 13. There are far______ students in this school than in that school. A. fewer B. less C. fewest D. least 14. Susan rarely stays up late, ______? A. is she B. isn't she C. does she D. doesn’t she 15. — “Tom wasn't there last night?” - “No, ______.” A. I wasn't either B. either was I C. I wasn't too D. neither I was 16. Most rodents eat grain, seeds and nuts. ______. A. but some eat almost anything B. instead a few doesn't eat grain C. while some eat those things D. contrary few eat anything Mark the letter A, B, C, or D to indicate the most suitable response to complete each of the following exchanges. 17. - “Let me help you with the box.” - “_______” A. Yes. That's very kind of you. B. I'm sorry. I'm busy now. C. What can I do for you? D. No. You must not touch it. 18. - “How far is your house from here” - “_______” A. Is there a bus from here? B. No. it isn't. C. Yes, it's very far. D. Two kilometers, at least.

ai làm hộ mình câu 2 với đc ko cần gấp