Bài 1: a) (-3/4+2/7):2/3+(-1/4+5/7):2/3 b) (-1/3)^2.4/11+7/11.(-1/3)^2 Bài 2: Gọi số miken,kẻm,đòng lần lượt là x,y,z mà x=3 y=4 z=13;Tỏng của x y z là 150.Áp dụng dãy tỉ số bằng nhau

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giúp mình cách chứng minh gợi ý đáp án bằng 3

Cho mình hỏi câu này có phải là đáp án D hay đáp án khác ạ? (Tại mình không chắc chắn lắm)

III. Rewrite these sentences, using “too” 1) The weather is so bad that we can’t go out. …………………………………………………………………………………………. 2) The film was so boring that we couldn’t go on seeing it. …………………………………………………………………………………………. 3) He was so old that he couldn’t run fast …………………………………………………………………………………………. 4) He spoke so fast that we couldn’t understand him. …………………………………………………………………………………………. 5) The fair was so noisy that we couldn’t hear each other. …………………………………………………………………………………………. 6) You speak so fast that I can’t catch up with your words. …………………………………………………………………………………………. 7) It is so early that we can’t go out. …………………………………………………………………………………………. 8) The water is so hot that I can’t drink it. …………………………………………………………………………………………. 9) The restaurant is so expensive that we can’t eat in that restaurant. …………………………………………………………………………………………. 10) He studied so badly that he couldn’t pass the exam. ………………………………………………………………………………………….

Cho mình xin công thức tính nha mấy cậu:

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10. __________ You __________ (be) a good student?

53. How _______ the street is! (danger) 54. She lives _________ although she is very poor. (happy) 55. I’ll help you to __________ some beautiful paintings. (choice) 56. The love for book is ___________ in developing the pupils’knowledge. (help) 57. This public library is ___________ to all people. (open) 58. Books help people to get more _____________. (know) 59. ___________ countries need help from __________ ones. (develop) 60. This stamp __________ is valuable. (collect) 61. The person who takes care of books is a ___________ .(library) 62. He is very ____________ (friend). 63. She smiles so ______________, doesn’t she? (attract) 64. My ______________ for your skill is great. (admire) 65. We all held our breath because of that ______________ film. (thrill) 66. I only had a day to visit all tourist __________. (attract) 67. They ride their bicycles to the countryside for ________. (please) 68. Red ________ communist counties. (symbol) 69. May Day is celebrated regularly in ________ countries. (society) 70. He lost the game because of his _______. (care) 71. The teacher stressed the need for regular ______. (attend) 72. The cost of ______ must be paid by the buyer. (carry) 73. Our _______ from London to Sydney took 24 hours. (fly) 74. The police are interested in the sudden _______ of the valuable painting. (appear) 75. The master gave Oliver Twist a terrible ________. (punish) 76. He gave no ______ for his absence. (explain) 77. They were happy because their work was finished __suceesful_____. (success) 78. To prepare his _______works, Karl Marx often spent whole days in the library of the British Museum. (science) 79. He is respected for his ________. (simple)

Mọi người giải giúp em với ạ . Em cảm ơn