Đáp án:
Giải thích các bước giải:
Số trục đối xứng của:
tứ diện đều(loại{3;3}) :6
lập phương(loại{4;3}) :9
bát diện đều(loại{3;4}) :9
12 mặt đều(loại{5;3}) : 15
20 mặt đều(loại{3;5}) :15
#X
giúp mik vs mik cần gấp cảm ơn mng nhiều mình sẽ chấm cao nhât
Question 1: Do you know what is the cause __________ pollution? A. of B. in C. on D. for Question 2: My mother has to measure blood __________ every month A. billboard B. pressure C. groundwater D. earplug Question 3: __________ pollution is harmful or annoying level of noise, as from vehicles, industry activities, etc. A. light B. visual C. soil D. noise Question 4: Parents should teach children not to __________ wastes on the road A. litter B. poison C. cause D. measure Question 5:I can’t hear your voice __________ I’m wearing an earplug A. although B. due C. however D. because Question 6:His grandfather made him __________ hard when he was small A. study B. to study C. studying D. studied Question 7: This picture __________ the contamination of ground water. A. illustrate B. illustrating C. illustrates D. illustrated Question 8: Could you list some non-point source __________? A. pollution B. pollutants C. polluting D. polluted Question 9: Scientists has just come up __________ a solution to hearing loss A. to B. on C. with D. down Question 10: If we dump a plastic into the ground, it __________ a long time to disappear. A. will take B. take C. took D. takes Question 11: Pollutions are harmful __________ human health A. with B. at C. to D. on Question 12: __________ water resulted in the death of many aquatic animals. A. Contaminate B. Contaminated C. Contaminating D. Contamination Question 13:What would you do if a factory in your neighborhood __________ untreated water into the river? A. dump B. dumped C. dumping D. dumps Question 14:Have you ever heard about the __________ of radioactive pollution? A. affects B. effects C. pollutes D. poisons Question 15: : __________ pollution is the increase of temperature caused by human activity. A. visual B. water C. thermal D. radioactive
Bài 2: Hãy xếp các kết hợp trên vào từng nhóm : Từ ghép có nghĩa tổng hợp, từ ghép có nghĩa phân loại, từ láy. Vui mừng, đi đứng, cong queo, vui lòng, san sẻ, giúp việc, chợ búa, ồn ào, xe đạp, thằn lằn, tia lửa, học hành, ăn ở, tươi cười, tướng tá, nhỏ nhoi, vuông vắn, bao bọc, nhỏ nhắn.
viết kết quả mỗi câu sau thành lũy thừa 9^5 chia 8^0
CMR không tồn tại k để đa thức f(x)=x4+2x2-7x+3k+5 chia hết cho đa thức (x+1)(x+2) Mọi người giải hộ mik vs
giải giúp mik bài này mik cần gấp mình sẽ đánh giá 5sao
Johnny ________ to play computer games. A is addited to B is addicting to C addicts to D addicted to Câu 2 My grandmother________to plant flowers in the garden behind her house. A detests B prefers C enjoys D adores Câu 3 Mr. Bean ___________reading books a lot because he finds this hobby interesting. A don't enjoy B doesn't enjoys C enjoys D enjoy Câu 4 Dogs adore _________with fresh meat A feeding B being fed C to feed D to be fed Câu 5 Miss Maureen is so big. She must________ eating. A detests B adore C detest D adores Câu 6 Do you fancy ________ with friends? A to socialise B socialised C socialising D socialise Câu 7 Mickey loves ________his parents________ DIY projects. A to help - with B help - in C help - with D to help - in Câu 8 Tom prefers________computer games when he’s at home. A A&B are correct B playing C played D to play Câu 9 Coco fancies________TV. He watches TV whenever he can. A watched B to watch C watching D watch Câu 10 Mary________reading Conan comics. A enjoys B dislikes C hates D detests Câu 11 He would like________ the Louvre museum with his family this weekend. A to visite B visiting C visit D visited Câu 12 Henry doesn't mind________up early in the morning. A will wake B waking C to wake D wake Câu 13 Bobby likes________hard because he wants to get the best result. A to study B studying C study D A&B are correct Câu 14 My mother loves________food for my family. A preparing B to prepare C A&B are correct D prepare Câu 15 I enjoy________with my dog. He’s so cute. A playing B play C to play D played Câu 16 In my free time, I would rather________ than ________. A to go to the cinema - to visit the museum B going to the cinema - visiting the museum C went to the cinema - visited the museum D go to the cinema - visit the museum Câu 17 My sisters________ Korean drama________ Indian drama. A prefers - to B prefer - to C prefers than D prefer than Câu 18 My grandma enjoys ________ woolly hats in her free time. A making B made C make D to make Câu 19 They're good_______ cleaning the floor. A in B on C at D into Câu 20 My sister hates________with the dolls. It’s weird. A A&B are correct B to play C to playing D playing
Mọi người giúp mình với ạ! Mình thật sự không hiểu cái đề luôn Đề: Viết một bài cảm nghĩ về cha mẹ hoặc người thân trong đợt chấp hành vi những chỉ thị giãn cách phòng chống dịch Covid 19 của chính phủ
Công thức tính diện tích hình thoi.
Mik giải xog trường hợp 1 x = y ròi các bn chỉ cần giúp TH2 thôi nhek
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