a 27/15 + 6/8 = 216/120 + 90/120 = 210/216
b 19/24 + 7/18 = 342/432 + 168/432 = 510/432
c 2/9 - 1/6 = 12/54 - 9/54 = 3/54
d 8/15 - 1/3 = 24/45 - 15/45 = 9/45
Cho 100 ml dung dịch CH3 COOH 2M tác dụng vừa đủ với 30 g dung dịch NaOH . a/ Tính nồng độ phần trăm của d dịch NaOH b/ Nếu cho toàn bộ dung dịch CH3COOH trên vào 100 ml dung dịch Na2CO3 0,5 M thì thu được bao nhiêu lít khí CO2 thoát ra ở đktc .
dựa vào tập bản đồ 8 , em hãy nhận xét về thời gian các cơn bão đổ bộ vào bờ biển nước ta . tháng nào có nhiều cơn bão đổ bộ nước ta nhất và ở vào những khu vực nào , hướng gió thịnh hành vào mùa hạ và mùa đông
Giúp em giải bài toán này vơis ạ!
Ai giải toán giúp mình với. Vote 5sao và ❤️
Câu 1 : để xóa kí tự phía trước con trỏ soạn thảo: A.Cut B. Coppy C . Delete D . Backspake Câu 2 :để tạo văn bản mới ta dùng nút lệnh : A. Save B. Open C. New D. Backspace Câu 3: để lưu văn bản ta dùng nút lệnh nào sau đây: A. Save B. Open C. New D. Backspac (nhớ ko được chép bài của nhau)
xin tra loi ho a mk can gap lam mk se cam on ban nao hay nhat I. Choose the word whose underlined part is pronounced differently from the others. 1. A. earthquake B. weather C. without D. though 2. A. technology B. psychology C. character D. charge II. Choose the word whose main stress pattern is placed differently. 3. A. natural B. disaster C. volcano D. typhoon 4.A. erupt B. collapse C. gather D. occur III. Choose the best options to complete the sentences: 5. When we came, they …………….. for the evacuation yesterday evening. A. are preparing B. were preparing C. had prepared D. prepared 6. The last tsunami caused a lot of…………. to the countryside along the Pacific coast. A. eruption B. disasters C. destruction D. damage 7. The earth quake…… the city at two in the morning last week. A. occurred B. hit C. swept D. measured 8. The people in this country have been trained to deal…… disasters. A. in B. about C. with D. to 9. The police forced him not ……. his place because he has been a witness . A. to leave B. leaving C. leave D. left 10. Volcanic eruptions are one of the most…………..natural disasters. A. destroy B. destruction C. destructive D. destroyed 11. Tidal waves are the result of a …. shift in the underwater movement of the earth. A. impressive B. slight C. clear D. sudden 12.…………. should include food, water, medications, personal hygiene items, copies of personal documents and some money. A. An emergency supply kit B. A food supply kit C. A health testing kit D. A medical check-up. 13. The government……….. the danger of the powerful earthquake before it struck the North- East of Japanese. A. have warned B. had warned C. warned D. has warned 14.They always believe in the government’s policy . (Find out the antonym) A. feel disappointed B. feel nervous C. feel worried D. feel sad 15. The roof collapsed under the weight of snow . (Find out the synonym) A. fell in B. broke off C. pulled down D. put way. IV. Read the text and choose the best answer A, B or C to each question below The Great Hanshin earthquake, or the Kobe earthquake as it is more commonly known overseas, was an earthquake in Japan that measured 7.3 on the Japan Meteorological Agency magnitude scale. It occurred on January 17 th , 1995 at 5:46 a.m in the southern part of Hyogõ Prefecture, and lasted for approximately 20 seconds. The epicenter ( dư chấn ) of the earthquake was on the Northern end of Awaji Island near Kobe, a cosmopolitan city ( thành phố quốc tế ) of over 1.5 million people. A total of 6,434 people, mainly in the city of Kobe, lost their lives. Additionally, it caused approximately ten trillion ( nghìn tỷ ) yen in damage. It was the worst earthquake in Japan since the Great Kantõ earthquake in 1923, which claimed 140,000 lives. 16. The word ‘overseas’ in the text is closest meaning to ____________ A. at sea B. abroad C. by sea D. aboard 17. The word ‘occurred’ in the text is closest meaning to ____________ A. started B. ended C. happened D. finished 18. It is started in the passage that the number of deaths in the city of Kobe ____________ A. was not as high as in the Great Kantõ earthquake B. exceeded that of any known earthquake C. was greater than that of the Great Kantõ earthquake D. was the highest in Japan. 19. The Northern end of Awaji Island was the place where ____________ A. 1.5 million people lost their lives B. the effects of the earthquake were felt most strongly C. there was no damage to people and property. D. there were many homeless people 20. We understand from the passage that the Kobe earthquake ____________ A. is not the deadliest earthquake in the history of Japan B. is internationally known as the Great Hansin earthquake C. didn’t cause any damage in neighborhood of Kobe D. was not the dangerous disaster in Japan.
Một Ô tô đi từ A và dự định đến B lúc 3h chiều . Nếu xe chạy với vận tốc 35km/h thì sẽ đến B chậm hơn 1h so với dự định.Nếu xe chạy với vận tốc 45km/h thì sẽ đến B sớm 1h so với dự định . Tính độ dài quãng đường AB và thời điểm xuất phát của ô tô tại A
Giúp mk vs mk cần gấp ạ Cảm ơn mọi người trước nhá
giúp em với !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Vẽ anime hoặc chibi giùm mik ạ🌺🌺🌺
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