Tìm x, y,z trong mỗi trường hợp sau: a) (6x +1)^2020 + (3y + 1)^2020 + | x +y +2z^2| = 0 b) (3x -2y)/5 = (2z – 5x)/3 = (5y – 3z)/2 và x + y + z = -50

Xác định GHĐ và ĐCNN của bình chia độ

Mn ơi giúp mik giải câu 14,15 vs

x(x-1)(x+1)(x+2)=24 các bn giúp mình nha

Cái bài mà có ghi là write your advice đó nha mn giúp milk với

Cho tam giác ABC cân tại A . A nhỏ hơn 90 độ. Kẻ BD vuông góc vói ac tại D. Kẻ CEvuông góc với AB tại E. a) chứng minh tam giác ADE cân b) chứng minh DE//BC c) gọi i là giao điểm của BD và CE. Chứng minh IB = IC d) chứng minh AI vuông góc với BC

Tính giá trị biểu thức A) 43,2 :12 ×0,5 + 4,789 B) 50 - 3,4×( 87: 25)

Câu 1: Để đảm bảo an toàn khi tham gia giao thông, cần tuân thủ những quy định gì? Câu 2: Tìm hiểu các loại biển báo Giao thông? ( biển cấm, biển nguy hiểm, biển hiệu lệnh) Câu 3: Quy định của pháp luật về tham gia giao thông + người đi bộ? + người đi xe đạp? + Quy định về an toàn đường sắt Câu 4: Liên hệ bản thân? Nói về việc tham gia giao thông của bản thân

I. Choose the word or phrase (A, B, C or D) that best fits the blank space in each sentence 1.Customer : _____________ are a sandwich and an ice-cream ?-Storekeeper : 35,000 dong A.How many B. How much C. What D. How 2.Son : Are there _____________ vegetables for lunch, Mom? Mom : Yes. There are some. A.any B. a C. some D. the 3.Can you go to the store ____________ me ? A.to B. on C. of D. for 4.Nga : Would you like some lemon juice, Nam ? Nam : __________________ Yes, I like B. No, I don’t. C. No, I would. D. Thanks, I’d love to. 5. Van : Do you want some sandwiches ? Thu : No, I’m not __________, thanks. A. hungry B. full C. thirsty D. good 6. My mother has an _______________ face . A. oval B. old C. small D. round 7.The boys has a small straight _________________ . A. nose B. eyes C. ear D. lips 8.You ___________ stop when the lights are red. A. can B. can’t C. must D. mustn’t 9.They travel from Hanoi __________ Ho Chi Minh city by train. A. on B. with C. to D. at 10.Salesgirl : How many oranges does she want ? Tina : ___________ of oranges A.Two kilo B. A dozen C. Half a dozen D. half a kilo 11. The sign warns you that…….. A. You must walk here. B. You must not ride a bike here. C. There are no bikes here. D. There are no vehicles here. 12. The sign noticed that…….. A. The students must cross here. B. The students must not run fast. C. A place for crossing is here, slow down and be aware. D. The students go ahead slowly. II. Supply the correct form of word given in each sentence: 1. I study English on the ________________________floor. (five) 2. There is an armchair in the ___________________ room. (live) 3. He gets _____________________ and goes to school. (dress) 4. She is my English ____________________. (teach) 5. We can’t ___________ into this road. ( going ) 6. My father _______________ any fish at this time. ( not, eat ) 7.Their parents work on the farm. They are _________________. ( farm ) 8. Her _______________ are small and white. ( tooth) III. Rearrange the sentences from the cues given: 1. a/ in / factory /mother /works /His /./ _______________________________________ 2. is /well / There / a / left /the /of /to /house /. / ______________________________________ 3. She/to /school / goes/ at / 6.30/ comes back/and/ home/11.30/ _________________________________________________________________________. 4. bread / for his brother’s / Is there / and eggs / breakfast / any / ?/ _________________________________________________________________________. 5. and two / my little brother / hot milk / cakes / a cup of / This morning, / would like / ./ _________________________________________________________________________. IV. Finish the second sentence. Keep its meaning similar to the above 1.The toy store is to the left of the bookstore. → The bookstore is ___________________________. 2. Hung’s class has fifty students. → There _________________________________. 3. My sister’s eyes are big and blue. → My friend has ____________________________. 4. She likes fried potatoes. → Her ____________________________________. 5. He drives a bus. → He’s a __________________________________. V. Make questions from the underlined words or phrases 1. ____________________________________________________________________? - My mother would like some eggs and salad. 2. ____________________________________________________________________? - No. His lips are full. 3. ____________________________________________________________________? - Hoa’s house is near the lake . 4. ____________________________________________________________________? - We have Math and Geography on Wednesday. 5. ____________________________________________________________________? - Hanh watches television in the living room. 6. ____________________________________________________________________? - No. Her school bag is small. 7. ____________________________________________________________________? - His classes finish at five o’clock. 8. ____________________________________________________________________? - She often helps her mother after school VI. Choose the word or phrase that best fits the blank space in the following passage This is my best friend, Ngoc. We go ( 1 ) _____________ the same school and we are together for three years. Ngoc is a pretty girl. She has short curly black ( 2 ) ____________ and big brown eyes. She is clever and hard - working but she is also funny. She makes jokes and we all laugh. She (3 ) _____________ reading and writing short stories. Now she is sitting in her room and reading “Alice in the wonderful land” that is her ( 4 ) ______________ story. 1. A. in B. to C. for D. with 2. A. nose B. mouth C. hair D. eyebrows 3. A. like B. is C. loves D. does 4. A. favorite B. interested C. favored D. full

jup mik nốt phần này mik hứa sẽ vote 5 sao và lời cảm ơn ( câu trả lời hay nhất nếu có)