Đáp án:
Giải thích các bước giải:
Cho mình xin lời giải của câu 1 và 3 xin cảm ơn rất nhiều
Cho hàm số y = - 5x² Với giá trị nào của x thì y nhận giá trị tương ứng bằng 0 ; -7,5 ; -0,05 ; 50 ; -120
1. Cho tam giác ABC vuông tại A có AB = 3cm, AC = 4cm. Gọi D, E lần lượt là trung điểm của AB và BC. a) Tính DE b) Gọi F là điểm đối xứng với E qua D. Chứng minh tứ giác AFEC là hình bình hành c) CF cắt AB và AE lần lượt tại K và M. DM cắt AC tại N. Chứng minh và tứ giác ADEN là hình chữ nhật. d) Tính độ dài đoạn BK.
Viết một đoạn văn (7 đến 10 )câu nêu cảm nhận của em về vẻ đẹp và tính cách của nhân vật Dế Mèn trong bàiBài học đường đời đầu tiên. Ghi ra một cụm động từ có trong đoạn văn viết trên và gạch chân phần trung tâm
Mn giúp mk vs . Nghỉ lâu quá não bị rỉ r
Bài 1: Cho dạng đúng của động từ trong ngoăc 1. Lan (get up) ...........at 6.00 2. Mai and Hoa (wash) .........there faces 3. Thanh (have) ............breakfast 4. My father(brush)...........his teeth 5. We (go) .........to school 6. She (go) to school in the morning 7. I (get) ........dressed 8. He (brush)......... his teeth everyday 9. They (have)..... .....breakfast 10. My mother (get)...........up at 5.00 Giúp mik nha
Mọi người ơi , đang cần rất gấp , mọi người giúp mik mới ( mơn trước nhé 🥰 )
Khi chia 4691cho một số tự nhiên thì số dư lớn nhất có thể là 101. Em hãy tìm thương của phép chia đó
1. Julie: Do you like swimming on hot summer days? Susan: ............................................................ * A. You're welcome B. That would be great. C. I feel very bored. D. I don't agree. I'm afraid. 2. Duong: ..................................? Peter: That's a good idea. * A. Are you ready to go? B. Why don't you attend the Ao dai fashion show? C. Let's choose Hue Festival. D. What about your hometown? 3. Choose the word OPPOSITE in meaning with the word MEMORABLE in the sentence. " Travelling to Da Lat Hasfarm is one of our memorable experiences". * A. memorizing B. unforgettable C. forgettable D. forgetful 4. Choose the word CLOSEST in meaning with the word CONVENIENCE in the sentence. " We all hope our future public transport will bring convenience to modern life". * A. comfort B. illness C. fitness D. trouble
PART B: LANGUAGE FOCUS I. Choose the best answer A, B, C or D to complete the sentences: 1. I ______________ Tom and Jerry many times. A. see B. saw C. am seeing D. have seen 2. My favorite _______________ is swimming. A. game B. match C. activity D. sport 3. He first _______________Ho Chi Minh City. A. go B. went C. visited D. been to 4. I’d like _______________a picnic. A. have B. has C. having D. to have 5. The Nile River is the _______________river in the world. A. high B. longest C. longer D. highest 6. Lan doesn’t like watching TV. She _______________watches TV. A. always B. usually C. never D. often 7. You can watch Harry Potter on TV________________ you can read it. A. or B. when C. but D. so 8. _________________ do you go to the gym? – By bus. A. What B. How C. Why D. Which 9. If we cut down more forests, there _______________ more floods. A. are B. will have C. been D. will be 10. It’s getting light. Shall I turn _______________ the lights to save electricity. A. off B. on C. up D. in II. Supply the correct tense or form of the verb in parentheses: 1. We (not visit) _____________ Nha Trang yet. 2. Trung is learning to play the guitar. He (have) _______________ guitar lessons twice a week. 3. If it is nice tomorrow, we (plant) ______________ some young trees in our garden. 4. We might (go) _______________ to the Moon for our summer holidays in 2050. 5. I was ill so I (not come) ________________ to school yesterday. PART C: READING I. Read the following passage and put a word in the box in each of the numbered blanks: control turn on change make use Scientists predict the places and the ways we live will (1) ___________ a lot in the future. Our houses in the future will be larger and more eco-friendly. Around our houses, there will be a lot of green trees. We will only (2) ____________ wind energy or solar energy instead of electricity in our houses. We will be able to (3) ____________ our future houses with our voices. We can sit at one place and order everything we want. For example, when it is dark, we will ask to (4) ___________ the lights or TV when we want to watch a programme on it. It will (5) _____________ our lives more comfortable and more interesting. 1_________ 2_________ 3_________ 4___________ 5__________ II. Choose the correct word A, B, C or D for each gap to complete the following passage: Before you travel to the US, you must find out what documents you need. British people do not (1) ____________ to get a visa, but there are different rules for (2) ____________ nationalities. For example, you don’t need to show that you have enough money (3) _________ you. But there is one rule you can be sure about: everyone has to show their passport. The roads in New York are very busy, but don’t worry, you can get around cheaply and easily by subway. Remember that you are not allowed to smoke (4) ___________ public transport or in shops. And don’t forget that you must tip taxi drivers and waiters. New York is not the most dangerous city in the US, but you really shouldn’t walk along empty streets at night. And it is (5) ___________ to travel around in groups. 1. A. ought B. have C. should D. used 2. A. other B. many C. different D. some 3. A. on B. in C. of D. with 4. A. in B. on C. at D. by 5. A. safer B. safe C. safest D. more safe III. Read the following passage and do the tasks below: A lovely house Peter lives in a house near the sea. It’s is an old house, about 100 years old, and it’s very small. There are two bedrooms upstairs but no bathroom. The bathroom is downstairs next to the kitchen and there’s a living room where there’s a lovely fireplace. There’s a garden in front of the house. The garden goes down to the beach and in spring and summer there are flowers everywhere. Peter lives alone with his dog, Boxer, but they have a lot of visitors. Their city friends often stay with them. Peter loves his house for many reasons: the garden, the flowers in the summer, the fireplace in winter, but the best thing is the view from his bedroom window. Peter is thinking of a new house in the future with the help of Robots. A. True (T) or False (F): Statement T F 1. Peter’s house is far from the sea. 2. The house is behind the garden. B. Answer the questions: 1. How many rooms are there upstairs? =>___________________________________________________________________ 2. Is there a bathroom upstairs? =>___________________________________________________________________ 3. Who often come to stay with them? =>____________________________________________________________________
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