Độ tan của cuso4 ở 45 độ c là 25g nếu cho 80g cuso4 hòa tan vào 800g dd cuso4 20% ở nhiệt độ cao, sau đó đưa dd thu được về nhiệt độ 45 độ c thì có x gam cuso4.5h2o kết tinh lắng xuống. Tính x?

Miêu tả một lá cờ Pa-pu-a (1906)

1 Which words complete the sentence? There are two new students in my class, ____ boy and ____ girl. A. You don't need a word in the spaces B. the / the C. a / a 2 Which sentence is correct? A. Actor in this film is very talented. B. Actors in this film are very talented. C. The actors in this film are very talented. 3 Which words go in the spaces? We saw ___ film yesterday. ___ film was about an explorer. A. a / A B. a / The C. the / A 4 Complete the sentence. My mum doesn't like ____. She thinks they are noisy. A. the dogs B. dog C. dogs 5 Complete the sentence. Don't look at ____. You will hurt your eyes! A. sun B. the sun C. a sun 6 sentence is NOT correct? A. Pollution is a serious issue. B. Environment is a serious issue. C. Climate change is a serious issue. 7 Which sentence is NOT correct? A. People are increasingly worried about health. B. People are increasingly worried about crime. C. People are increasingly worried about economy. Giải thích nữa nhé

Nhờ mn giúp đỡ ạ 1. Tìm x để các biểu thức sau ∈ Z a, $\frac{5}{2x-1}$ b, $\frac{2x+9}{x+3}$ c, $\frac{x-3}{x-5}$ 2. Chứng tỏ A= $\frac{12n+1}{30n+2}$ là phân số tối giản 4 Tính S= 1+2+2^2_2^3+...+2^2020 / 1-2^2021

zẽ choa táu pic nì giống ít nhất 90% Lưu ý : tô màu, vẽ đẹp, có chữ kí, vẽ giấy A4 nhá đu trend ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ngoài lề cho xin link nick Tâm nhớ

3km75dam=.....km.....m......=3.75....

Giúp mình bài này vs ạ Cần gấpppppppppp

Giúp mình làm mấy bài này với ạ!

Vẽ đi nào các bạn! Hình dưới nhé, ưu tiên bức 3 :))

1 Which words complete the sentence? There are two new students in my class, ____ boy and ____ girl. A. You don't need a word in the spaces B. the / the C. a / a 2 Which sentence is correct? A. Actor in this film is very talented. B. Actors in this film are very talented. C. The actors in this film are very talented. 3 Which words go in the spaces? We saw ___ film yesterday. ___ film was about an explorer. A. a / A B. a / The C. the / A 4 Complete the sentence. My mum doesn't like ____. She thinks they are noisy. A. the dogs B. dog C. dogs 5 Complete the sentence. Don't look at ____. You will hurt your eyes! A. sun B. the sun C. a sun 6 sentence is NOT correct? A. Pollution is a serious issue. B. Environment is a serious issue. C. Climate change is a serious issue. 7 Which sentence is NOT correct? A. People are increasingly worried about health. B. People are increasingly worried about crime. C. People are increasingly worried about economy. Giải thích nữa nhé