Đáp án + Giải thích các bước giải:
`3/2 + 1/2 = (3+1)/2 = 4/2 = 2`
`4/9 + 5/9 = (4+5)/9 = 9/9 = 1`
`9/10 + 11/10 = (9+11)/10 = 20/10 = 2`
`3/2 + 1/2 = {3 + 1}/2 = 4/2 = 2`
`4/9 + 5/9 = {4 + 5}/9 = 9/9 = 1`
`9/10 + 11/10 = {9 + 11}/10 = 20/10 = 2`
`#dtkc`
Tìm điều kiện của tham số m để đồ thị hàm số y m x 2 5 3 đi qua điểm
1. My grandfather is 86 years old. He walks very ____ ( slow ) 2. Ronaldo is a ___ player. He play soccer very ___ ( skill ) 3. He speaks English is very ___, so I can't understand ( quick )
hòa tan 5,6l và 3,36l khí hcl vào nước thu được V1 lít dd A có nồng độ a M và V2 lít dd B có nồng độ là bM.Trộn V1 lít dd A với V2 lít dd B thu được 2 lít dd C . 1.tính Cm của dd C 2.tìm a,b biết a hơn b là 0,4
Văn bản Vào ngục quảng đông cảm tác của ai? Đọc lại cặp câu 3-4,em thấy giọng điệu có gì thay đổi so với 2 câu thơ trên?vì sao?lời tâm sự ở đây có ý nghĩa như thế nào?
bài rất khó lớp 5a trồng được số cây bằng 4/3 số cây của lớp 5b , lớp 5c trồng được số cây bằng 4/6 số cây của lớp 5b , lớp 5a trồng nhiều hơn số cây của lớp 5b là 24 cây . Hỏi mỗi lớp trồng dược bao nhiêu cây?
Mấy bạn giúp mk được không Với lại cho mk hỏi kí tên trong Cap là gì ạ , mk là người mới nên k bt😅😅😅
tại sao quân ta lại chọn phân khu Bắc làm nơi mở đầu chiến dịch trong khi có thông tin cho thấy thì lúc này khu Him Lam và Độc Lập là 2 cứ điểm được tổ chức phòng ngự tốt nhất của địch?
Cho hình vuông ABCD có cạnh dài 6cm trên đoạn BD lấy điểm E và D sao cho BE=ED=PD a) tính diện tích hình vuông ABCD b) tính diện tích hình AECP
Kiến thức kì I anh 8(không cần mô tả)
50. If he ________ for the revision session, he might have no difficulty doing the test right now. A. had come B. came C. is to come D. had to come 51. I / finish / read / long novel / Arthur Hailey // A. I finished to read a long novel of Arthur Hailey. B. I’ve just finished reading a long novel written by Arthur Hailey. C. I’ve finished reading the long Arthur Hailey’s novel. D. I finished the reading long novel with Arthur Hailey 52. throw / thousands / tons / rubbish / forest / year // A. People throw some thousands tons of rubbish into the forest every year. B. People throw thousands of tons of rubbish into the forest every year. C. Throwing thousands of tons of rubbish is into the forest every year. D. People throwing thousands of tons of rubbishes into the forest every year. 53. The Magic Hat __________ at 12 A. m. every Saturday. A. broadcast B. broadcasts C. is broadcasting D. broadcasted] 54. The whistle signaled the end of the first half. The match will continue after half-time and now AC Milan ___________ Juventus by 2 goals to nil. A. led B. is leading C. has led D. leads 55. _________ any letters from him lately? A. Do you receive B. Have you received C. Are you receiving D. Had you received 56. I _________ a meeting at the office at this time tomorrow, so you can phone me later in the evening. A. have B. have had C. will have had D. will be having 57. The moon __________ around the earth. A. has moved B. moves C. is moving D. will move 58. She said she __________ that film years before. A. saw B. has seen C. had seen D. would see 59. The film will end when you have finished dinner. A. By the time you finish dinner, the film will have ended. B. By the time you have finished dinner, the film will end. C. You finish dinner, and then the film will end. D. By the time you finishing dinner, the film will have ended. 60. A new style of jeans ________ in the USA. A. has just introduced B. were just introduced C. has just been introduced D. have just been introduced 61. She ________ before I came home A. light B. is lighting C. had lit D. lights 62. We ________ out before 10 p. m last night. A. go B. is going C. goes D. had gone 63. Lan ________ those flowers before 7 am last Monday. A. grew B. had grown C. grow D. grows 64. The thief ________ into my house before I came home. A. had broken B. breaks C. has broken D. break 65. He ________ in before I invited her. A. come B. was coming C. had come D. came 66. She ________ married before she studied in university. A. had got B. is getting C. has got D. got 67. I ________ decision before yesterday. A. makes B. made C. has made D. had made 68. Lan ________ before I slept the day before yesterday. A. cooked B. was cooking C. had cooked D. cook 69. I ________ ill before I came here. A. was B. had been C. have been D. were 70. He ________ before they came. A. win B. was winning C. won D. had won 71. He ________ the truth before they forced him. A. told B. is telling C. had told D. has told 72. He ________ my money before I hint it.
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