Đáp án:gọi quãng đường AB là X (km) (x>0)
Thời gian đi là :x/50 (h)
Thời gian nghỉ là 15 phút =1/4 (h)
Vì tổng thời gian là 2h30p hay 5/2 (h)
nên ta có pt .
x/50+x/40+1/4=5/2
⇒x=50 (km)
vậy quãng đường AB dài 50 km
Giải thích các bước giải:
Help me tui mọi người ơiiii hôm nay tui phải nộp rồi:(( cần gấp
giúp mình câu d bài 3 và bài 4 nhé
Giải thich chi tiêt cho mình dễ hiễu nha,
2. Read the passage and choose the best answer to the following questions. Bangkok, the capital of Thailand, is a city of contrasts. It is an exciting, crowded, modern city and, at the same time, a city that is full of history. The streets of Bangkok are usually noisy and have too many people. Some people are selling food; others are selling clothing, cassette tapes, flowers, or souvenirs. Visitors love the river markets, the beautiful temples and architecture, and the nightlife. Most of the year, Bangkok is hotter than any other capital city in Asia, but from December to February, the weather is not as warm and so it is much more comfortable. Actually, it’s an interesting city to visit at any time of the year. The shopping is excellent, and the prices are not as high as in many other large cities in Southeast Asia. There is always so much to do in Bangkok at anytime of the day or night – from watching Thai dancing or boxing to taking a boat trip on the river or trying some of the delicious and spicy food. And if you get tired of the city and want a quiet place, there are beautiful beaches only two hours away by bus. 1. Which phrases can you use to describe the streets of Bangkok? A. a city of contrasts B. noisy and crowded C. full of history D. excited and modern 2. What does NOT interest visitors in Bangkok? A. the shopping B. sightseeing C. the weather D. the nightlife 3. “so much to do in Bangkok” means ____. A. easy to find a job in Bangkok B. much free time C. lot of entertainment D. lot of souvenirs 4. What visitors cannot see or watch at any time of the day? A. Thai dancing B. Thai boxing C. river markets D. nightlife 5. Where is the nearest beach from Bangkok? A. only two hours B. only two hours away C. only two hours from Bangkok D. only two hours away by bus 3. Read the paragraph and fill in the gap with one suitable word: All the world knows William Shakespeare as one of the greatest poets and dramatists. He was (1).................in a small English town of Stratford-upon-Avon and (2) ..............up in a large family of eight brothers and four sisters, but many of them died very (3) ................ His father, John Shakespeare, made and sold gloves. William learned (4).....................a school in Stratford. He married very young (5)......................he was about nineteen, and soon (6).............. to London where he worked at a theater. There he began to write (7)................for the theater, his plays were good and people like (8)..................... Now Shakespeare could help his family in Stratford. He (9)........................thirty-seven plays and some books of poems. At the end of his life he came back to Stratford and (10).....................................there.
Phần I: Đọc hiểu. Đọc đoạn văn sau, trả lời các câu hỏi bên dưới: Dòng sông Năm Căn mênh mông, nước ầm ầm đổ ra biển ngày đêm như thác, cá nước bơi hàng đàn đen trũi nhô lên hụp xuống như người bơi ếch giữa những đầu sóng trắng. Thuyền xuôi giữa dòng sông rộng hơn ngàn thước, trông hai bên bờ rừng đước dựng lên cao ngất như hai dãy trường thành vô tận. (Đoàn Giỏi) a. Nội dung chính phần trích trên. b. Chỉ rõ các phép so sánh dùng trong đoạn. (vế A, vế B, kiểu so sánh) c. Tác dụng của phép so sánh đó. Phần II. Tạo lập văn bản. Từ đoạn trên, em viết đoạn văn ngắn trình bày cảm nhận của em về dòng sông Năm Căn qua văn bản “Sông nước Cà Mau” ?
nhân dân ta thường nhắc nhở nhau : ăn quả nhớ kẻ trồng cây. Hãy chứng minh lời nhắc nhở đó là nét đẹp truyền thống của dân tộc
3. Read the paragraph and fill in the gap with one suitable word: All the world knows William Shakespeare as one of the greatest poets and dramatists. He was (1).................in a small English town of Stratford-upon-Avon and (2) ..............up in a large family of eight brothers and four sisters, but many of them died very (3) ................ His father, John Shakespeare, made and sold gloves. William learned (4).....................a school in Stratford. He married very young (5)......................he was about nineteen, and soon (6).............. to London where he worked at a theater. There he began to write (7)................for the theater, his plays were good and people like (8)..................... Now Shakespeare could help his family in Stratford. He (9)........................thirty-seven plays and some books of poems. At the end of his life he came back to Stratford and (10).....................................there. C. WRITING 1. Rewrite each of the following sentences using the CAPITAL word given (do not change the capital words given). 1. They are cutting the cake with a sharp knife. (CUT) ………………………………………………………………………….. 2. I spend half an hour each day doing my homework. (TAKES) ………………………………………………………………………….. 3. Because of the bad weather, we had to stop our picnic. (FROM) ………………………………………………………………………….. 4. My mother cooks well. (A) ………………………………………………………………………….. 5. How far is it from Hanoi to Ho Chi Minh city? (DISTANCE) …………………………………………………………………………..
Chị em làm mấy bài tập này vs ạ Em cảm ơn
Một cửa hàng lương thực bán được 390kg gạo bằng 65% tổng số gạo cửa hàng đó có trước khi bán. Hỏi trước khi bán cửa hàng đó có bao nhiêu tạ gạo
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