giúp mình với hứa cho 5* và hay nhất ạ

Bài 5: Chứng minh rằng với mọi số tự nhiên n thì n(n+1):2

Dẫn chứng đề lá lành đùm lá rách, k copy

IX. Rewrite the following sentences. 1. Jane cooks better than her sister -> Jane's sister ............................................................................................................. 2. Tom is the best football player in this team -> Nobody in this team ............................................................................................... 3. Nothing is faster than the speed of light -> The speed of light ................................................................................................... 4. Jack is younger than he looks -> Jack isn't ................................................................................................................. 5. I didn't spend as much money as you -> You ......................................................................................................................... 6. Quang is lazier than Ha. (hard-working) ........................................................................................................................................................ 7. A city is noisier than a village. (peaceful) ........................................................................................................................................................ 8. There’s a post office on on side of my house and a café on the other. (between) ........................................................................................................................................................ 9. Please tell me something about your neighbourhood. (Can) ........................................................................................................................................................ 10. Oranges are cheaper than apples. (expensive) ........................................................................................................................................................

Vẽ miku ko/có màu tuỳ VOCALOIDv²

gải giùm me .

Cân bằng các phương trình sau theo phương pháp cân bằng đại số 1,cu +h2so4 đặc ,nóng→cuso4+so2+h2o 2,cu+hno3 đặc ,nóng→cu(no3)2 + no2+h2o 3,cu+hno3→cu(no3)2+n2o5+h2o 4,zn+h2so4→znso4+so2+h2o 5,al+h2so4→al2(so4)3+so2+h2o 6,al+hno3→al(no3)3+no+h2o 7,cu+hno3→cu(no3)2+no+h20

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36 . {600 : [426 . 1 – (81 + 35 . 7)]}

helppppppp Do 4và1/4 / 2và 7/8 = x / 1,61