Giải các hệ phương trình sau theo m a) { mx + 6y = 8 (m-1)x + 3y =4 b) { x - my = m ² + 1 mx + y = m ² + 1 c) { x + my = 5 2x + (m ² - m)y = 10

Mọi người giúp e bài 13 , 15 , 16 vs ạ . E cảm ơn rất nhiều

hai người thợ cùng làm công việc trong 4 giờ 48 phút thì xong nếu người 1 làm trong 4 giờ và người thứ hai làm trong 9 giờ thì xong công việc hỏi mỗi người làm mọt mình thì bao lâu xong việc giải hệ phương trình nha. cám ơn nhìu

lập dàn ý và từ câu chuyện của chiếc bình nứt , anh ( chị ) hãy viết 1 bài văn trình bày suy nghĩ về quan điểm : Con người ai cũng có khuyết điểm, quan trọng là biết biến khuyết điểm thành lợi thế. ( mọi người giúp mình với nha thank mọi người nhìu)

`\text{Tìm x, biết:}` $\frac{-15}{12}$$x$ $+$ $\frac{3}{7}$ $=$ $\frac {6}{5}$$x$ $-$ $\frac{1}{2}$ `\text{Nhớ giải chi tiết nha}`

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b. Complete each sentence so it means the same as the sentence above Example: I don’t have a television in my bedroom.  There isn’t any television in my bedroom. 1. There are three interesting films on VTV3 today. Today VTV3 has__________________________________________________. 2. You can visit Universal Studios where they make films in Hollywood The places where they make_________________________________________. 3. My favorite programme on TV is cartoons. I like____________________________________________________________. 4. A man in Sri Lanka watches TV more than any other man in the world. Nobody_________________________________________________________. 5. 99% of households in America have at least one TV. Nearly__________________________________________________________.

Put the verbs in brackets in to the correct verb form (gerund,present participle,infintive)

1. My sister (go) _________to school at 7 o’clock every morning. 2. A:What_______you (do) _________, Hoa? B: I’m helping my mum with the housework. 3. We can’t go out now. It (rain) _________ very hard. 4. How _________ you (go) _________ to school every day? 5. In England the sun (not shine) ____________ every day. 6. _________your sister (listen)_________ to music in her free time? 7. Someone (knock) _________ at the door. Can you answer it? 8. Look! Lan (wear) ____________ a new dress. 9. ____________ You (enjoy) ____________ collecting stamps? 10. I (like) _________ maths but I (not like) _________ English. B. Find the mistake in each sentence and correct it 1. There isn’t some water in the glass…………………………. 2. There are a 3 children talking with the teacher…………………………. 3. Are there some air conditioners in the attic? …………………………. 4. Is there any windows in this classroom? 5. There aren’t some pencils in the pencil case …………………………. C. Complete each sentence so that it means the same as the sentence above. 1.There are many flowers in our garden. Our garden_____________________________________________. 2. There are many chairs in the kitchen. The kitchen___________________________________________________ 3. There are four people in my family: my parents,my brother and me. I live________________________________________________________ 4.We have six chairs, a table, a television and a ceiling fan in our living room. There are_____________________________________________. 5.I don’t have a computer in my bedroom. There_____________________________________________

How old you A . are B . is C . it Trả lời luôn nhen