Đáp án:
`B. 64 (dm^3)`
Giải thích các bước giải:
Thể tích của một hình lập phương có cạnh 4 dm là :
`4×4×4=64(dm^3)`
Đáp số: `64 (dm³)`
Đáp án: $B$
Thể tích hình lập phương đó là:
$V=a×a×a=4×4×4=64(dm^3)$
$\to$ Đáp án $B$
Mn giúp mik zứi =((( `\text{Bài 1:}/` `a. |x|+5=15` `b. x+32=-15` `c. -x-(-22)=55` `d. |x+3|=7
hai xe khởi hành cùng lúc đi về phía nhau . một xe đi từ A, một xe đi từ B sau 1h30 phút hai xe còn cách nhau 108km.tính quanh đường AB biết rằng xe thứ nhất đi cả quãng đường AB hết 6h,xe thứ hai đi cả quang đường BA hết 5h
II. Complete the second sentence so that the meaning is similar to the first. 1. I was surprised I passed the exam. I didn’t expect… 2. I don’t read newspapers any more. I’ve given up… 3. He looks older when he wears glasses. Glasses make … 4. Did you manage to solve the problem? Did you succeed … 5. If you’ve got a car, you are able to travel around more easily. Having a car enables …. 6. Nobody saw me come in. I came in …. 7. Why have a car if you never use it. There’s no point …. 8. What do you think I should do? What do you advise …. 9. It’s a pity I can’t go out with you. I’d like … 10. I’m sorry that I didn’t take your advice. I regret …. 11. I find it hard to remember people’s names. I have difficulty …. 12. My father said I could use his car. My father allowed …. 13. Please don’t bother me all the time. Would you mind …. 14. Don’t let me forget to phone Same tomorrow. Remind …. 15. The doctor suggested we should walk every day for extra exercise. The doctor recommended us ….
Cầu 7. Cho duing tron (0,R) và BC là dây cung cổ định (BC không qua O) A là một điểm di động trên (0) (A khác B, C). Gọi N là một điểnm trên dây cung AC sao cho CN =-AC Gọi D là điểm đối xứng của C qua B và M là trung điểm của AD. Chứmg minh rằng khi A di động trên (0) thi: b. M di đong trên một đuòng cổ dịnh. a N di động trên một đuong cổ định. c. Trọng tâm G của AABC di động trên một duong cổ dịnh.
giúp mình giải với mình vote cho
Mn ơi lm hết giùm e vs ai e cảm ơn nh
TEST 1 Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress in each of the following questions. 1) A. concerned B. raised C. developed D. maintained 2) A. attempts B. shares C. looks D. beliefs 3) A. leaves B. brings C. looks D. plays 4) A. watched B. promoted C. invited D. decided 5) A. babies B. chairs C. shops D. schools 6) A. houses B. horses C. matches D. computers 7) A. walls B. bosses C. goods D. fingers 8) A. arms B. legs C. heads D. chests 9) A. brothers B. parents C. uncles D. nephews 10) A. hears B. dreams C. wishes D. sees 11) A. knows B. lives C. stays D. meets 12) A. regrets B. remembers C. drinks D. laughs 13) A. resources B. figures C. answers D. animals 14) A. decreases B. differences C. amounts D. reaches 15) A. protects B. kicks C. misses D. stops 16) A. ploughs B. laughs C. coughs D. paragraphs 17) A. matched B. educated C. enriched D. washed 18) A. attended B. improved C. dedicated D. exhibited 19) A. killed B. developed C. threatened D. endangered 20) A. wanted B. looked C. needed D. visited 21) A. planned B. worked C. helped D. galloped 22) A. watched B. passed C. used D. washed 23) A. misses B. goes C. leaves D. potatoes 24) A. adopted B. appealed C. dedicated D. wounded 25) A. grows B. tends C. roars D. sweeps 26) A. founded B. admitted C. promoted D. combined 27) A. talked B. painted C. asked D. liked 28) A. worked B. stopped C. forced D. wanted 29) .A. waited B. mended C. objected D. faced 30) A. marked B. alleged C. needed D. walked 31) A. kissed B. helped C. forced D. raised 32) A. learned B. watched C. helped D. wicked 33) A. confused B. faced C. cried D. defined 34) A. kissed B. pleased C. increased D. ceased 35) A. devoted B. suggested C. provided D. wished 36) A. watched B. crashed C. occupied D. coughed 37) A. started B. looked C. decided D. coincided 38) A. designed B. preserved C. sawed D. guided 39) A. agreed B. missed C. liked D. watched 40) A. practised B. amused C. advertised D. annoyed 41) A. embarrassed B. astonished C. surprised D. decreased 42) A. lays B. sings C. calls D. roofs 43) A. roses B. villages C. apples D. matches 44) A. languages B. rabies C. assumes D. consumes 45) A. succeeds B. devotes C. prevents D. coughs /f/ 46) A. sees B. sports C. pools D. trains 47) A. widens B. referees C. sacks D. cancels 48) A. tombs B. lamps C. brakes D. invites 49) A. books B. floors C. combs D. drums 50) A. stops B. climbs C. pulls D. televisions ---THE END---
Làm Giúp mình bài 16,17,18 với nha
1. We were stuck .......... a traffic fam for over two hours 2. How far is your school ........... your house? 3.I got .............. at the wrong stop and had to wait ............. another bus.
I. Make sentences from the notes. 1. Eva / like / read/ stories about Greek heroes. 2. Mark/ prefer/ stay/ at home/ to/ go /out 3. we/ must/ avoid/ waste/ so much time. 4. sometimes/ a country/ refuse/ take part/ I the Olympics. 5. Chris/ be/ fed up with/ drive/ in the rush hour traffic/ every day 6. I/ really/ detest/ wait/ for buses/ in the rain 7. the teacher/ recommend/ read/ the text carefully 8. I/ can’t go on/ work/ here/ any more 9. the buses/ usually/ stop/ run/ before midnight 10. Sandra/ be used to/ work/ late/ the office 11. I/ can’t face/ get up/ at five/ morning 12. Nancy/ suggest/ go/ the lake/ this weekend 13. yesterday/ you/ promise/ carry on/ shoot/ the film 14. my father/ seem/ get/ better/ now 15. I/ would rather/ stay/ home/ tonight
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