(x - 2/9)³ = (-2/3)⁶

(x + 1/2)² = 1/16
 

2x² + (-6)³ : 27 = 0

giúp mình nhanh với

Nâng cao :

11. Cho hai số hữu tỉ m/n và p/q ( n;p > 0 ). Chứng tỏ rằng nếu m/n < p/q thì mq < np.

12. Cho hai số hữu tỉ m/n và p/q ( n;p > 0 ). Chứng tỏ rằng nếu mq < np thì m/n < p/q.

13. Chứng tỏ rằng:

- Cho b > 0. Nếu a < b thì a/b < a+1/b+1. Nếu Nếu a > b thì a/b > a+1/b+1.

- Cho b,d > 0. Nếu a/b < c/d thì a/b < a+c/b+d < c/d.

              Giúp mình lẹ với. Mình cần gấp trước 5h chiều nay.

Bài 14: Lớp 7B có 4/5 học sinh thích học toán, 7/10 số học sinh thích học văn, 23/25 số học sinh thích học Tiếng anh. môn học nào được nhiều bạn học sinh lớp 7B yêu thích nhất?

Bài 15: Trong dịp hè, bạn An muốn mua một số vở để chuẩn bị cho năm học mới. Cửa hàng có 2 loại vở: 6 quyển vở Hồng Hà có giá trị 65 nghìn đồng và 9 quyển vở Campus có giá 103 nghìn đồng. Hỏi để tiết kiệm bạn An nên mua loại vở nào?

Mình cần gấp nha

so sánh các số hữu tỉ sau 1 cách nhanh nhất

a) -146/43 và 1/89 

b) 21/23 và 13/12 

c) 3131/1313 và 31/13 

d) -19/49 và -23/47    

e) 2019/2018 và 2020/2019    

d) 2018/2019 và 2019/2020

Giúp mik ngay bây h dzới

Giúp mình lun dzới

Giúp tớ ngay bây giờ với

GIÚP MÌNH VỚI NGAY BÂY GIỜ LUÔN NHA

II. Hãy viết lại các câu dưới đây bằng cách dùng liên từ trong ngoặc.

1. The chickens haven’t been fed; the pigs haven’t been fed either. (NEITHER…NOR…)

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2. She carried me in her arms AND she lutted me to sleep. (NOT ONLY…BUT ALSO…)

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3. You were mad OR drunk. (EITHER…OR…)

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4. You can find it in the library OR in a second-hand book shop (EITHER…OR…)

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5. The boy is intelligent AND hardworking. (BOTH…AND…)

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6. He didn’t want his coffee OR his tea strong. (NEITHER…NOR)

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7. You can take these tablets OR seek a doctor’s advice. (EITHER…OR…)

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8. The thief stole my money AND tore up my identify card. (NOT ONLY…BUT ALSO)

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9. He spoke French fluently AND correctly. (BOTH…AND…)

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10. She should get a scholarship OR she should work her way through medical school. (EITHER…OR…)

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11. Fred likes helping his friends. So does Linda. (both...and)

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12. Harry used to date Ann. Or was it Helen? (either...or)

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13. We should learn to accept our weaknesses and our strengths. (not only...but also)

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14. He never listens to or advises his friends when they have a problem.(neither...nor)

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15. I've betrayed your trust. I've betrayed your love for me. (not only...but also)

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16. He felt disappointed. He felt misunderstood. (both...and)

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17. Brian isn't very considerate. Neither is Tom.(neither...nor)

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18. A true friend is someone who is caring and loving. (both...and)

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19. Rachel should apologise or leave. (either...or)

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20. Richard and John didn't keep her secret. (neither...nor)

@