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Tổng số học sinh 2 lớp là:
40x2=80 (học sinh)
Dố học sinh của lớp 4B là:
(80-4):2=38 (học sinh)
Số học sinh của lớp 4A là:
80-38=42 (học sinh)
Đáp số: Lớp 4A có 42 học sinh
Lớp 4b có 38 học sinh
40x2=80(học sinh)
(80+4):2=42 (học sinh)
Số học sinh của lớp 4B là:
80-42=38 (học sinh)
Lớp 4B có 38 học sinh
Giúp mình bài 9, 10, 11, 12 ,13 với
tính A bằng 5^2021-5^2020-5^2019-...-5^2-5^1-1
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I. Find the word which has a different sound in the part underlined. 1. A. car B. date C. lazy D. hate 2. A. train B. wait C. said D. paid 3. A. sailing B. railway C. brainstorm D. captain 4. A. safety B. chat C. taste D. waste 5. A. centre B. let C. belt D. security 6. A. safety B. traffic C. station D. plane 7. A. seat B. head C. heavy D. weather 8. A. head B. break C. bread D. heavy 9. A. maid B. wait C. hair D. sail 10. A. hey B. grey C. honey D. obey II. Choose the best answer A, B, C or D to complete the sentence. 1. Cyclist and motorist have to wear a ___________ when they ride a motorbike. A. cap B. mask C. helmet D. large hat 2. He forgot to give a ___________ before he turned left and got a fined ticket. A. hand B. signal C. sign D. light 3. All of us have to obey ____________ strictly. A. traffic B. traffic rules C. traffic jam D. regular 4. We should wait for the traffic lights _____________ before we cross the street. A. turn yellow B. to turn yellow C. turn green D. to turn green 5. Drivers have to ___________ your seatbelt whenever they drive. A. tie B. fasten C. put on D. put 6. We should __________ the street at the zebra crossing. A. walk B. walk through C. walk on D. walk across 7. _____ is it from your house to the nearest bus stop?” – “About 50 metres”. A. How much B. How long C. How far D. How often 8. Linh used to __________ jigsaw puzzles in his spare time. A. do B. does C. doing D. did 9. Public __________ in this city is quite good, and it’s not expensive. A. vehicle B. travel C. transport D. journey 10. I ____________ marbles when I was young, but now I didn’t. A. play B. have played C. used to play D. didn’t use to play 11. There ______ a bus station in the city centre, but it has been moved to the suburbs. A. were B. used to have C. use to have D. used to be 12. ___________ does it take to go from Ha Noi to Ho Chi Minh city by plane. A. How much B. How many C. How long D. How far 13. Minh used to ___________ his homework late in the evening. A. do B. does C. doing D. did 14. If people ___________ the rules, there are fewer accidents. A. follow B. take care of C. obey D. remember 15. You should ___________ right and left when you go across the road. A. see B. look C. be D. take 16. Hurry up or we can’t ___________ the last bus home. A. keep B. follow C. go D. catch 17. Lan used to go to school ___________. A. with bike B. by foot C. in car D. by bus 18. Public ___________ in my town is good and cheap. A. travel B. journey C. tour D. transport 19. When there is a traffic jam, it ___________ me a very long time to go home. A. takes B. costs C. spends D. lasts 20. Yesterday Rick and Peter ___________ round west lake. It took them an hour. A. cycle B. cycles C. cycling D. cycled
Cho dạng đúng của các từ trong ngoặc: 1. It's totally ____ that you stayed home when you were sick. (understand) 2. Don't laugh at his stupid joke! You'll only _____ him to say them again. (courage) 3. That sidewalk is _____, I almost fell! (slip) 4. After Monday, I will no longer be a Foreigner I am receiving my _____ ! (citizen) 5.Arthur will be very lonely unless you ______ him. (friend) 6. Every afternoon, the cooks _____ their knives in preparation for dinner.(sharp) 7. I hate being around Mary Lou, she is ______ . (friendly) 8. The stock market crash of 1929 left my great grandfather _______. (penny) 9. I have a class at 8:00 a.m but I always _______. (sleep) 10. The groom may _______ the bride only when their vows have been exchanged. (veil) 11. I think we should try something else. That strategy seems way too ______. (risk) 12. My father's death left me with a great _______ in my heart. (empty) 13. George W. Brush is pretending that he attacked Iraq to _______ the Iraqis. (liberty) 14. American fought hard to earn their ______ from Britian. (free) 15. When you work at a nuclear power plant, you have to be extremely _______. (care) 16. Every time I think I've beaten you, you _______ me! ( do) 17. I had to take three months off when I was pregnant, but my boss has been very _____. (understand) 18. He will _______ the wine as soon as we are ready for dinner. (cork) 19. You need to work on your orthography so you don't ______ these words. (spell) 20. The weather ______ looks bad forr a picnic, rainy and windy! (cast) Help!!
Giúp em ý c bài đường tròn này với hic2
Năm nay, N.M 12 tuổi. Em sống cùng mẹ và cha dượng......
|x-2|+2|x-1|=11. tìm x |x ²+|x-1||=x ²+5
Giúp mình với ạ( mình cần công thức excited about-->looking. Và làm mẫu câu 1 phần rewrite giúp mình với)
viết tích sau dưới dạng lũy thừa của một số nguyên (-8).(-3)^3.125
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