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$\begin{array}{l} A)\dfrac{{{{20}^5}{{.5}^7}}}{{{{100}^5}}} = \dfrac{{{{20}^5}{{.5}^7}}}{{{{\left( {20.5} \right)}^5}}} = \dfrac{{{{20}^5}{{.5}^7}}}{{{{20}^5}{{.5}^5}}} = {5^2}A = 25\\ B)\dfrac{{{6^3} + {{3.6}^2} + {3^3}}}{{ - 13}}\\ = \dfrac{{{6^2}\left( {6 + 3} \right) + {3^3}}}{{ - 13}}\\ = \dfrac{{{2^2}{{.3}^2}.9 + {3^3}}}{{ - 13}}\\ = \dfrac{{{2^2}{{.3}^4} + {3^3}}}{{ - 13}}\\ = \dfrac{{{3^3}\left( {{2^2}.3 + 1} \right)}}{{ - 13}}\\ = \dfrac{{{3^3}.13}}{{ - 13}}\\ = - {3^3}\\ = - 27\\ C){4^6}{.9^5} + {6^9} = {2^{12}}{.3^{10}} + {2^9}{.3^9} = {2^9}{.3^9}\left( {{2^3}.3 + 1} \right) = {2^9}{.3^9}.25\\ \dfrac{{120}}{{{8^4}{{.3}^{12}} - {6^{11}}}} = \dfrac{{{2^3}.3.5}}{{{2^{12}}{{.3}^{12}} - {2^{11}}{{.3}^{11}}}} = \dfrac{{{2^3}.3.5}}{{{2^{11}}{{.3}^{11}}\left( {2.3 - 1} \right)}} = \dfrac{{{2^3}.3.5}}{{{2^{11}}{{.3}^{11}}.5}} = \dfrac{1}{{{2^8}{{.3}^{10}}}}\\ {2^9}{.3^9}.25 > 1 > \dfrac{1}{{{2^8}{{.3}^{10}}}} \Rightarrow {4^6}{.9^5} + {6^9} > \dfrac{{120}}{{{8^4}{{.3}^{12}} - {6^{11}}}} \end{array}$
Question 3.Rewrite the sentences, using the given words. 1. Tim is better at English than Susan. → Susan isn’t………………………………………………………………………………….. 2. We spent five hours getting to London. → It took……………………………………………………………………………………… 3. Listening to music gives him pleasure. → He enjoys………………………………………………………………………………….. 4. He is more beautiful than her younger sister. → Her ……………………………………………………………………………………….. 5. They began studying English in 2004. → They have ……………………………………………………………………………………… 6. You ought to go to school now. → It’s time………………………………………………………………………………… 7. My father works as a teacher at a high school. → My father is ……………………………………………………………………………… 8. We can’t afford to buy the car. → The car is………………………………………………………………………………….. 9. People say that he smokes 40 cigarettes a day.. → He is said to……………………………………………………………………………… 10. She has never played the guitar. → This ………………………………………………………………………………………. 11. The painter displays all the paintings in the gallery. All the paintings ……………………………………………………………………………… 12. People will plant more trees and plants in the park. More …………………………………………………………………………………………. 13. Peter always locks the door before 9 p.m. The door …………………………………………………………………………………….. 14. Does Jim take you to the airport? Are you ……………………………………………………………………………………… 15. How often does Jane clean the room? How often …………………………………………………………………………………… 16. My brother rarely writes a long essay. A long essay ………………………………………………………………………………… 17. My aunt arranges flowers beautifully. Flowers …………………………………………………………………………………….. 18. Mr. Smith sometimes drive the new car to work. The new car ……………………………………………………………………………….. 19. I never speak English outside the classroom. English ……………………………………………………………………………………. 20. People never open this gate. The gate…………………………………………………………………………………… 21. People invented the wheel thousands of years ago. → The wheel 22. My father waters these flower every morning. → These flowers 23. People use computers all over the world. → Computers 24. Are they building a statue of Chu Van An? → Is ? 25. People completed the Golden Gate Bridge in San Francisco in 1937. The Golden Gate Bridge in San Francisco ………………………………………………….
Question 2. Put a word from the box in each gap to complete the following passage are special kinds for When mixed introduction dish easy dried This (1) ______ is called Nem Ran by northerners and Cha Gio by southerners. In Ha Noi, the (2) ______ of Nem Ran dates back to a time (3) ______ Cha Ca had not existed. Although it ranks among Vietnam’s specialty dishes, Nem Ran is very (4) ______ to prepare. Consequently, it has long been a preferred food on (5) ______ occasions such as Tet and other family festivities. Ingredients used (6) ______ Nem Ran comprise of lean minced pork, sea crabs or unshelled shrimps, two kinds of edible mushroom (Nam Huong and MocNhi), (7) ______ onion, duck eggs, pepper, salt and different (8) ______ of seasoning. All are (9) ______ thoroughly before being wrapped with transparent rice paper into small rolls. These rolls (10) ______ then fried in boiling oil.
Bài 2: Tìm các biện pháp nghệ thuật được tác giả sử dụng trong đoạn thơ sau: "Quê hương anh nước mặn đồng chua Làng tôi nghèo đất cày lên sỏi Anh với tôi hai người xa lạ Tự phương trời chẳng hẹn quen nha Súng bên súng, đầu sát bên đầu Đêm rét chung chăn thành đôi tri k Đồng chí!"
4. 'I will only work extra hours if I get paid at a higher rate.' (unless) --> 'I will ____ I get paid at a higher rate.' 5. Max offered Gaby a lift to the station, but she didn't accept. (turned) --> Gaby _____ offer of a lift to the station. 6. Valerie doesn't object to her photograph appearing in the magazine. (objection) --> Valerie ____ her photograph appearing in the magazine
Question 1. Read the passage and choose the correct answer. How much (1) ¬¬¬______ does it usually take you to prepare a dish? You are busy and you don’t have (2) ______ time for a meal. Don’t worry. It’s always quick and easy to make (3) ¬¬¬______ omelette for a quick meal. You only have to go through (4) ¬¬¬______ steps as followed. Before you start, make sure you’ve already have two eggs, two (5) ¬¬¬______ of water, one teaspoon of butter and (6) ¬¬¬______ salt. After you get all the needed (7) ______, start by beatig eggs, water and salt in small bowl. In the following step, you heat butter in (8) ¬¬¬______ nonstick pan until it is hot. Then you pour the egg mixture into the pan. Gently push cooked portions from edges toward the center. Continue cooking until the top surface of eggs is thickened and no visible liquid egg remains. Now it’s time for you to enjoy the dish. 1. A. hours B. hour C. time D. times 2. A. a B. an C. any D. some 3. A. a B. an C. any D. some 4. A. a B. an C. any D. some 5. A. bottles B. gallons C. teaspoons D. litres 6. A. a B. an C. any D. some 7. A tools B. ingredients C. furniture D. food 8. A. a B. an C. any D. some
Vẽ cho mình vài cái lòng mắt có màu nha (ít nhất phải 2 đôi) Vẽ cho mik mắt nam nữa nha, khó quá (đẹp thì trl kp đẹp thì thôi nha_)
Chỉ dùng 1 kim loại nhận biết các dung dịch sau: $HCl,HNO_3,AgNO_3,NaNO_3,NaOH$.
B1: Cho a+b-c=0.Chứng minh a) a^2+b^2+c^2=2ac+2bc-2ac b)a^4+b^4+c^4=2(a^2b^2+c^2b^2+b^2c^1) B2: Cho a+b-c=0.Chứng minh a^3+b^3-c^3=-3abc B3: Chứng minh các biểu thức sau nhận giá trị dương với mọi gtrị của biến: A=x^2-2x+3 B=x^2+4x+5 E=(x-2)(x+4)+3 F=2x^2-4xy+4y^2+2x+5 Giúp mình nha :3
1. 'Don't touch the cake, Toby, it's still hot,' said Mrs Smith. (not) --> Mrs Smith _____ the cake because it was still hot. 2. Tamsin was the only student who hadn't done her homework. (apart) --> All the students ____ done their homework. 3. I expect Lucy was pleased that she'd won the prize. (been) --> Lucy ____ that she'd won the prize.
cho tam giác ABC , gọi M là trung điểm AB, D là trung điểm BC, N thuộc cạnh AC sao cho vecto CN= 2 vecto NA , K là trung điểm MN , biểu diễn vecto KD= m. vecto AB + n. vecto AC .GIá tri m-n=....
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