Đáp án`+`Giải thích các bước giải:
` 15 + 25 + 35 + ... + 85 `
`= (15 + 85) + (25 + 75) + (35 + 65) + (45 + 55) `
`= 100 + 100 + 100 + 100 `
`= 400 `
`15 + 25 + 35 + 45 + ... + 85`
`= (15 + 85) + (25 + 75) + (35 + 65) + (45 + 55)`
`= 100 + 100 + 100 + 100`
`= 100 × 4`
`= 400`
5x(x-4y)-4y với x= -1/5; y= -1/2
XII. Choose A, B, C or D to complete each sentence 1. The flower was _____________ out of a single piece of valuable wood. A. carved B. moulded C. cast D. given 2. In this town, they _____________ all the frames in steel. A. make B. have C. mould D. cast 3. She is skilled at _____________ cloth. A. giving B. weaving C. doing D. carving 4. If you like, I can _____________ flowers on the cushion covers for you. A. grow B. make C. embroider D. knit 5. Is it true that you _____________ this woolen hat yourself? A. knitted B. wove C. did D. carved 6. The doll has been _____________ out of clay. A. embroidered B. cast C. woven D. moulded 7. I love going to this place _____________ it’s the quietest place in the city. A. so B. though C.so that D.as 8. They keep changing the decoration of the shop _____________ they can attract more young people. A.so that B. because C. although D. when 9. _____________ she’s young, she’s the most famous artisan in the village. A. When B. Although C. Whereas D. In order to 10. Do you know who’s _____________ his pottery workshop? A. bringing out B. taking over C. passing down D. turning down 11. I’ve _____________ the product catalogue and decided to buy this table. A. found out B. closed down C. looked through D. lived on 12. This sports centre is so small that it cannot _____________ the demands of local residents. A. keep up with B. face up to C. deal about D. set up
Tại sao các đồng vị bền lại có số hiệu nguyên tử nằm trong khoảng $\rm \le $ 82
XI. Make a complex sentence from each pair of sentences. Use the subordinator provided and make any necessary changes 1. The villagers are trying to learn English. They can communicate with foreign customers. (in order that) ………………………………………………………………………………………………………………. 2. We ate lunch. Then we went to Non Nuoc marble village to buy some souvenirs. (after) ………………………………………………………………………………………………………………. 3. This hand-embroidered picture was expensive. We bought it. (even though) ………………………………………………………………………………………………………………. 4. This department store is an attraction in my city. The products are of good quality. (because) ………………………………………………………………………………………………………………. 5. This is called a Chuong conical hat. It was made in Chuong village. (since) ………………………………………………………………………………………………………………. 6. There are modern knitting machines. The artisans in my village like using traditional looms. (although) ………………………………………………………………………………………………………………. 7. Many children like to go to Bat Trang Ceramic village. They can make their own pottery there. (as) ………………………………………………………………………………………………………………. 8. We have to follow more than ten stages. We can make a simple conical hat. (so that) ………………………………………………………………………………………………………………. 9. Sinh paintings are special. They are burned after worship. (since) ………………………………………………………………………………………………………………. 10. We’ll have to phone you first. Then we’ll organize the trip. (before) ………………………………………………………………………………………………………………. 11. We were visiting an old building. They were going to a traditional market. (while) ……………………………………………………………………………………………………………….
ĐỀ TÀI : thơ tự do 4hàng 4dòng( LƯU Ý KHÔNG CHÉP MẠNG ) mình sẽ vote 5 sao cho bn nhanh nhất
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TÍNH NHANH; (827 + 716 + 9333) - (727 +616 + 833)
Cho hình thang ABCD (AB// CD) có AC = BD chứng minh hình thang ABCD là hình thang cân
a) Cho tình huống sau : Một bạn chạy và vào em bé hãy tưởng tượng và viết đoạn văn ( khoảng 5 câu) kể tiếp sự việc diễn ra theo mộ trong hai trường hợp sau 1 ) Bạn nhỏ để mặc em bé 2) Bạn nhỏ dừng lại để hỏi han và giúp đỡ em bé . ..............................………………………………………… …….......................................................................................................................... ................................................................................................................................ B) Em hãy tưởng tượng và viết đoạn văn ( khoảng 5 câu ) kể sự việc diễn ra theo trường hợp còn lại (chưa viết o bài tập a)
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