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sin bình3x+sin bình5x=sin bình8x

Hóa 8 Người hỏi: dinhmanh312008 Người trả lời: xxx

Tìm x, y, z, biết: `b) 3 . x = 5 . y và y - x = -18` `d) x/2 = y/3 ; y/4 = z/5` và `x + y -z = 10` `e) x/3 = y/4 và x² + y² = 100`

V. Rewrite the following sentences using questions words + to-infinite. 6. We are not sure who we will meet at the entrance. 7. I don’t know what I should do to make my mother happy. 8. She wondered how she could tell her mother about the stolen bicycle 9. We are not sure what we should do to make our house more beautiful at Christmas.10. My mother can’t decide where we should go at summer holidays. 10. My mother can’t decide where we should go at summer holidays.

Cho hàm số y = tan(x)^2 - 2tanx - 1 . GTNN của hàm số trên là bao nhiêu?

Rewrite the sentence using the given word in bold letters, keep the meaning unchanged. DO NOT CHANGE THE GIVEN WORD, USE FROM 2 TO 5 WORDS INCLUDING THE WORD GIVEN IN BRACKETS. 1. That bicycle was too expensive for me to buy. (enough)  I ___________________________________________________ to buy that bicycle. 2. I'd prefer it if you didn't close the door. (mind)  _____________________________________________________ closing the door? 3. Many people in the world speak English. (spoken)  English _______________________________________ many people in the world. 4. "Do many tourists visit Phong Nha Cave every year, Hoa?" asked Tim. (if)  Tim asked Hoa _______________________________ Phong Nha Cave every year.

Turn passive Lan washes her hair twice a week. What should we do now ? Hoa can’t do this work. We must do something when it’s too late. They used to drink beer for breakfast in England years ago - 4.Who wrote that story? -.................................................................................. 5.I don’t eat fish for lunch. -............................................................ 6. He donated a lot of money for the poor people. - .......................................................................... 7. Do they plant roses in the garden? - ............................................................................. 8. When does he usually do his homework.? - ……………………………………………………………………

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