1. tính bằng cách vận dụng 7hdt B = x^3 - 3x^2 + 3x với 11

Cho a gam hỗn hợp gồm Al và Mg tác dụng vừa đủ với dung dịch H2SO4 96% thì thu được dung dịch X và 3,7 lít khí H2S duy nhất ở 27ºC, 2 atm. Cô cạn dung dịch X thu được 140,4 gam muối khan. a. Tính a và khối lượng dung dịch axit đã dùng b. Tính nồng độ % dung dịch X. c. Nếu cho a gam hỗn hợp trên tác dụng với H2SO4 loãng thì thu được bao nhiêu ml khí (đktc)?

ADJ Comparative Superlative ADJ Comparative Superlative 1- cheap cheaper The cheapest 7- narrow 2- healthy 8- expensive 3- dangerous 9- happy 4- many 10- little 5- good 11- far 6- noisy 12- worried

Xác định thành phần chính của câu câu: Sáng hôm nay, gió mùa đông bắc đã thổi về phía bắc nước ta

Rewrite these sentences using the CORRECT FORM of the words given. The meaning must stay the same. 1) They have a great reputation for sports. (excel) -> 2) I think he deserved to win. (worthy) -> 3) Nothing much happened at the party. (event) -> 4) The flat hasn't got any furniture. (furnish) -> 5) The trip was a waste of time! (point) -> 6) It's an interesting vase but it has no value. (worth) -> 7) A lot of people support the movement. (follow) -> 8) People are increasingly aware of its value (recognize) ->

What the beautiful girls! (Rewrite the sentence using get + Ving) Giúp mình nha mọi người.

Cho đa thức A= 3,5x²y - 2xy² + 1,5x²y + 2xy + 3xy² B= 2x²y +3,2xy +xy² -4xy² - 1,2xy a) thu gọn đa thức A;B b) tính A-B

III. Read the following passage and do the tasks below : Many people still believe that natural resources will never be used up. Actually, the world's energy resources are limited. Nobody knows exactly how much fuel is left. However, we also should use them economically and try to find out alternative sources of power. According to Professor Marvin Burnham of the New England Institute of Technology, we have to start conserving coal, oil and gas before it is too late; and nuclear power is the only alternative. However, many people don't approve of using nuclear power because it is very dangerous. What would happen if there were a serious nuclear accident? Radioactivity causes cancer and may badly affect the future generations. The most effective thing is that we should use natural resources as economically as possible. A. True ( T) or False ( F): Statements 1. According to the passage, using nuclear power is safe. 2. Radioactivity from nuclear power causes cancer and has bad effect on the future generations. B. Answer the questions: 1. How much fuel is left? ............................................................................................. 2. Is nuclear power is the only alternative coal, oil and gas? ............................................................................................. 3. How may radioactivity cause on the future generations?

Dưới đây là bài Nghe và viết lại (inter) của mik trên TA123 Có lỗi nào sai ngay cả dấu câu sửa lại cho mik để mik được 10 nhé. Đề bài: 401 The wettest areas receive only half an inch of rain a year. But in the desert center, as far as history knows it has never rained. Every corner of the compass reveals nothing but sand, stretching as far as the eye can see. It seems impossible that anything can live here. Despite the bleak prospects of life, if you know how, there are ways of surviving. The animals of the atacama never overlook opportunity and when they find it they fight to the death to defend it. In the middle of the atacama life congregates around any source of water.

Câu 1: Số bé nhất có một chữ số là: А. 1 В. 0 C.2 Câu 2: Số lớn nhất trong các số: 1,9,4,7 là: A. 7 В. 4 C.9 Câu 3: Phép tính nào sai? A. 5 - 3 = 2 B. 3 + 2 = 6 C.5-4 = 1 Giúp mik tiếp nha mnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn