Tính: `5/{1.4} + 5/{4.7} +....+5/{100.103}` `5/{1.3} + 5/{3.5 } +.....+ 5/{99.101}`

Giúp mình bài ex2 với thank you anh em

VII. Mark the letter A, B, C or D to indicate that underlined part that needs correction in each of the following sentences. 1. As soon as I know, Nga Son mats village has existed for more than 150 years with many ups A B C D and downs. 2. Tho Ha village gate has nice, large and antique architecture making by skillful hands of the A B C village’s craftsmen. D 3. Chinese Painting became popularly around 581 AD since more and more people began A B C to appreciate its beauty. D 4. In order that promote the development of the craft village, more support from local authorities A B C is needed. D 5. Careful planning is very important to help craft villages growing and flourish to attract more A B C tourists to the country. D 6. All families in Phuoc Tich village earned their living from making ceramics for the past 500 A B C D years. 7. Some of the most excited architecture in Britain can be found in Manchester and the nearby A B C D Salford Quay’s area. 8. Artisans in the traditional craft village are facing difficulties in seeking markets for their A B C product. D

Đặt tiêu đề cho bức tranh sau:(chủ đề về ô nhiễm môi trường) YC:NO COPY VD:Phá hoại moi trường coi thường mạng sống

VI. Write the correct form of the words in brackets. 1. The price of clay, supplies and equipment is a small percentage of the total cost to pottery. (product) 2. He started the youth group to keep local off the streets. (young) 3. Poem conical hats are believed to come from Tay Ho Village in Hue, which was famous for hat makers. (skill) 4. Today, Hang Trong paintings are found only in museums or fine art galleries. (authenticity) 5. Craft village tourism has also proved an , receiving great attention from visitors, especially foreign tourists. (attract) 6. Mass started in 1989 when the first 340 Windsurf guests arrived. (tour) 7. The tribe is concerned with the preservation of its culture and traditions, (preserve) 8. The second collection was more decorative, inspired by embroidery and pattern. (embroider) 9. Vietnamese people have a strong desire to maintain a distinct cultural identity. (culture) 10. I’d like to thank everyone for helping to make this day for us. (memory)

`1`, Một viên bi kim loại nặng 20g được thả vào cốc nước đầy có khối lượng 40g. Sau khi thả đem cân lại thì cốc nước có khối lượng 55g. Tính khối lượng riêng của viên bi kim loại? `2`, Hãy trình bày phương án xác định khối lượng riêng của một vật nhỏ bằng kim loại với các dụng cụ :Một chiếc cốc ,một chiếc cân ,Một bình đựng chất lỏng có khối lượng riêng đã biết Mong chuyên gia cíu ;-;!

bằng phương pháp hóa học hãy phân biệt các chật sau:NaCl,Na2SO4,H2SO4

-2/5.x + 4/3 = 7/3 Nhanh giùm mik nhớ là vẫn đầy đủ nha

help meeeeeeeeeeeeeeeeeeee chỉ cần làm câu a thôi ạ

cho tam giác ABC, D là điểm chính giữa của BC, E là điểm chính giữa của CA, AD cắt BE ở G. hãy chứng tỏ AG gấp đôi GD ?