mot don vi chuan bi du gao cho 750 nguoi an trong 40 ngay nhung co them mot so nguoi den an chi trong 25 ngay hoi so nguoi den an them la bao nhieu

7 yến 90 kg = ............... kg

Mng cho em lời giải c6 phần a b với ạ

cho điểm l nằm giữa a b tính độ dài đoạn thẳng ab biết al =2

Bài 1 : Tìm số nguyên x biết: c) 8x + 7x - 6^2:12= -33 d) 86: [2. (2x - 1)2– 7] + 42= 2.32

Giải phương trình bằng cách đưa về phương trình tích (x+2)(x mũ 2 - 3x+5)=(x+2) nhân x mũ 2

một mảnh vườn hình chữ nhật dài 40m chiều rộng bằng 2/5 chiều dài . bác năm dành 30% diện tích mảnh vườn để trồng trọt tính diện tích còn lại của mảnh vườn là

Tính 4/3×2011×0,75 Ưu tiên victorialinh Ưu tiên giangminhvuhoang Ai ko có tên mik bc

khó lắm!!!!!!!! Bài 1: Thực hiện phép tính (Tính nhanh nếu có thể) a) 45- 9.(13 + 5) b) 14.(19-17) -19.(29-28) c) 2.(-4 - 14): (-3) d) (-6 -3). (-6 +3) e) (7 -10) +138 : (-3) f) 35 : (-5) – 7.(5 -18) g) (-8)2.32 h) 92.(-5)4

Exercise 9. Read the following passage and mark the letter A, B, C, or D to indicate the correct word or phrase that best fits each of the numbered blanks. TOURISM Tourism is a big business. Millions of people around Europe spend their winters planning their destinations for the following summer, and their summers (1) _______ to foreign climes for two weeks in the sun. They are the modern-day descendants of the aristocrats and the wealthy who would (2) ______ months to complete the “Grand Tour” of Europe. But unlike their forefathers, tourists these days get a bad press. They’re not (3) _________in the local culture, we’re (4) _______ ; they’re just after the chance to behave a bit more wildly than they do at home. What’s more, they damage the local environment and don’t respect the locals and their (5)_________ of life. But are tourists really to blame ? Or is it the fault of the tourist industry, which has failed to provide reasonably-priced alternatives? (Source: Skills for FCE: Use of English) 1. A. taking away B. moving away C. taking off D. jetting off 2. A. spend B. make C. take D. pass 3. A. devoted B. eager C. keen D. interested 4. A. told B. informed C. convinced D. said 5. A. way B. mamner C. standard D. means Exercise 10. Read the following passage and mark the letter A, B, C, or D to indicate the correct answer to each of the questions. One of the seven wonders of the ancient world, the Great Pyramid of Giza was a monument of wisdom and prophecy built as a tomb for Pharaoh Cheops in 2720 B.G. Despite its antiquity, certain aspects of its construction make it one of the truly great wonders of the world. The thirteen-acre structure near the Nile River is a solid mass of stone blocks covered with limestone. Inside are a number of hidden passageways and the burial chamber for the Pharaoh. It is the largest single structure in the world. The four sides of the pyramid are aligned almost exactly on true north, South, east, and west – an incredible engineering feat. The ancient Egyptians were sun worshipers and great astronomers, so computations for the Great Pyramid were based on astronomical observations. Explorations and detailed examinations of the base of the structure reveal many intersecting lines. Further scientific study indicates that these represent a type of timeline of events – past, present, and future. Many of the events have been interpreted and found to coincide with known facts of the past. Others are prophesied for future generations and are currently under investigation. Many believe that pyramids have supernatural powers, and this one is no exception. Some researchers even associate it with extraterrestrial beings of the ancient past. Was this superstructure made by ordinary beings, or one built by a race far superior to any known today? (Source: TOEFL Cliffs) 1. The word “intersecting” in paragraph 2 is closest in meaning to _______ . A. Crossing B. aligning C. observing D. cutting 2. What do the intersecting lines in the base symbolise? A. Architects’ plans for the hidden passage. B. Pathways of the great solar bodies C. Astrological computations D. Dates of important events taking place throughout time. 3. The word “prophesied” in paragraph 2 is closest in meaning to______ . A. Affiliated B. precipitated C. terminated D. foretold 4. Extraterrestrial beings are _________ . A. Very strong workers B. Astronomers in the ancient times C. Researchers in Egyptology D. Living beings from other planets 5. What is the best title for the passage? A. Symbolism of the Great Pyramid B. Problems with the Construction of the Great Pyramid C. Wonders of the Great Pyramid of Giza D. Exploration of the Burial Chamber of Cheops