Tìm x biết a, x+6=9 b, x-8=3 c, 13-x=6

Cho em hỏi công thức thấu kính tính k=? Ạ

Calli chữ : Trốn Thoát Khỏi Mật Thất S3 giấy hay app cũng đc :D

Treo 1 quá cầu có bán kính 2 cm nặng 500g vào lò xo có chiều dài ban đầu là 20 cm a) Tình trọng lượng của quả cầu b) Tình thể tích quả cầu

Vẽ cái gì đó cổ vũ tinh thần đi ạ (mầm, chibi/anime... nhận hết nhưng pk đúng đề) Cả ngày học sấp mặt :'> sáng 4 t toán, chìu 4 t văn :'> thứ 7 z đó TvT tối học thêm nx OvO. Mệt mỏi hong cày đc nh mog nhóm thứ lỗi :(

PART II. PHONOLOGY: Choose the word that has the underlined parts pronounced differently from the others in each group (1p) 1. A. there B. healthy C. gather D. northern 2. A. raised B. practised C. talked D. liked 3. A. days B. ways C. bays D. says 4. A. much B. drug C. future D. buffalo PART III. LANGUAGE FOCUS: I.Choose the best answer from the four choices (A, B,C,D) to complete each of the following sentences (2pts) 1. ____________ is La Tomatina celebrated? – Every August. A. Where B. Why C. When D. Which 2. I __________go on foot when I was in primary school. A. used to B. break C. can D. may 3. Give a________ before you turn left or right. A. signal B. turn C. sound D. sign 4. ____________ being frightened by the images, Lan still liked the film so much. A. In spite B. Despite C. Although D. Nevertheless 5. ________ the film was gripping, Tom slept from beginning to end. A. Therefore B. Despite C. However D. Although 6. Solar energy __________ by many countries in the world in the future. A. use B. will use C. will be using D. will be used 7. __________ is a renewable sourse. A. Coal B. Oil C. Wind D. Gas 8. Nuclear energy can provide electricity for the world needs, but it is __________ A. cheap B. unlimited C. dangerous D. safe II. Put the correct form of the verb in brackets. (1p): 1. Nam (never see) __________________________________ this car before. 2. What____________we (do ) _____________ to save electricity, Dad ? - We will watch less TV. 3. At 10 o’clock tomorrow he ( work ) _____________________ in his office. 4.We (attend) ________________________ the Festival last month. PART IV. READING I. Read the passage and complete the sentences. Circle A, B, or C (1p) The Earth Day comes from the idea of a former US politician Gaylord Nelson. He was worried about the world pollution, and the health of plants and animals. In 1969, he decided that the world should have a special day to teach people about how to make environment better. His idea became popular and on 22 April 1970 the first Earth Day was celebrated. Since then, environmentalists have used the day to educate people about their roles in protecting our planet. Earth Day finally became a global celebration around the world. On this day, people come together to talk about global warming, protecting rare animals and saving energy sources. 1. The Earth Day was first celebrated in ______. A. 1969 B. 1970 C. 2015 2. According to the passage, Gaylord Nelson was ______. A. trying to pollute the environment B. worried about the environment C. not concerned about global warming 3. The word their refers to ______. A. environmentalists’ B. politicians’ C. people’s 4. The best title for the passage can be ______. A. The meaning of the Earth Day B. Preserving our energy sources C. Gaylord Nelson, the politician

Viết đoạn văn theo phép lập luận quy nạp (khoảng 12 câu) phân tích khổ 5 và 6 của bài thơ về tiểu đội xe không kính trong đó có sử dụng câu đơn mở rộng( gạch chân dưới câu đó)

Giúp mk. Chỉ cần điền a,b,c thôi ak

Giả hộ mik ạ Mình cho 60 đ luôn ạ

Quy đồng mẫu số 202/1515 và 12012/25025