`text(Gọi số cần tìm là : x)`
`⇒ x = 15a + 6`
`⇒ x = 9b + 1`
`⇒ 15a + 6 = 9b + 1`
`⇒ 6 - 1 = 9b - 15a`
`⇒ 9b - 15a = 5`
`⇒ 3(3b - 5a) = 5`
`text(Ta có :)`
`3(3b - 5a) \vdots 3`
`text(Mà 5 không chia hết 3`
`text(⇒ Không có số tự nhiên nào thỏa mãn)`
5.giải:
giả sử có số a thuộc N thõa mãn cả hai điều kiện đã cho thì a=15q1+6 (1)
và a=9q2+1 (2)
Từ (1) suy ra a chia hết cho 3
Từ (2) suy ra a không chia hết cho 3
đó là điều mâu thuẫn
Vậy ko có số tự nhiên nào thõa mãn đề bài
Vẽ điii .Anime nhâ Pov : Blinkk ơi !!!!!!!!! Hôm nay ngày gì nàoooooo
Mọi người giúp nhé! Hứa 5*, tim, ctrlhn
1. What _____ you to design that beautiful and unique pattern? * 10 điểm inspire has inspired have inspired is inspiring 2. Henry is a poet. He _______ a lot of beautiful poems so far. * 10 điểm writes wrote has written is writing 3. This is a difficult problem. I wish I ______ the answer. * 10 điểm will know knew would know know 4. It's about time your sister _____ married. * 10 điểm gets has got is getting got 5. I'd rather you _______ to school early tomorrow to help me with the preparations. * 10 điểm to come will come came come 6. I'd rather he _____ me the truth earlier. * 10 điểm tells told would tell had told 7. "Which musical instrument ________ when she was 10 years old?" * 10 điểm was Mary playing has Mary played did Mary use to play is Mary used to playing 8. This is the third time we _______ the second prize. * 10 điểm win won had won have won 9. My mom usually ______ coffee in the morning, but today she _______ milk. * 10 điểm drinks - drinks drinks - is drinking is drinking - is drinking is drinking - drinks 10. A pot ______ on his head when he ______ home. * 10 điểm fell - cycled fell - was cycling was falling - cycled was falling - was cycling
giúp tớ với ah !!! đề : I. Find the word with the different underlined sound. 1. A. washed B. needed C. danced D. matched 2. A. obey B. key C. grey D. survey 3. A. ways B. days C. says D. stays II. Find the word which has a different stress pattern from the others. 4. A. prefer B. finish C. complete D. begin 5. A. dangerous B. important C. enormous D. convenient III. Choose the correct option A, B, C, D to complete the sentences. 6. The University of Indochina . . . . . in Hanoi in 1906. A. built B. was built C. has built D. has been built 7. Last year, we participated in . . . . . funds for street children. A. raising B. making C. gathering D. taking 8. The doctor says my father will become ill . . . . . he stops smoking. A. until B. when C. unless D. if 9. We . . . . . to school two years ago. Now I go to school on foot. A. used to cycle B. cycled C. was cycling D. went 10. . . . . . the silly story, many people enjoyed the film. A. Although B. In spite of C. However D. Nevertheless 11. A friend of . . . . . is coming to stay with me next month. A. me B. my C. I D. mine 12. Traffic accidents can be prevented if people . . . . . the rules. A. remember B. obey C. go after D. take care of 13. I’m sure you’ll find the film . . . . . A. amuse B. amusing C. amused D. amusement 14. Vanilla Sky . . . . . Tom Cruise, Peslelope Cruz and Cameron Diaz. A. acts B. plays C. stars D. does 15. Give a . . . . . before you turn left or right. A. sign B. turn C. sound D. signal 16. On Thanksgiving, families and friends . . . . . to have a feast. A. meet B. arrive C. gather D. appear 17. The end of the film was so . . . . . A. moved B. moving C. move D. moveable 18. Look at the photo! You’re . . . . . a horse! A. driving B. flying C. riding D. lying 19. At 7:00 tomorrow, you . . . . . to school. A. cycle B. will cycle C. will be cycling D. will be cycled 20. In the green future, vehicles will be powered by . . . . . A. solar energy B. coal C. gas D. fuel
IV. Rewrite the following sentences :
HAPPY BIRTHDAY 8/8 !! Vẽ Muichirou Toukitou =))) NL : Nay sinh nhật idol tui đókkk vẽ idol tui cho cận thận UwU Y/c : Full line , full màu ... Toi cx đg vẽ 1 bức mà chưa kịp xong :<<< buần :<< Tranh toiiiii dưới hình :>>>>
Vẽ mầm khóc đi =(( - Pay acc fb gòi trz đất :')))
phân tích mỗi số số nguyên tố ra thừa số nguyên tố rồi tìm tập hợp ước các số đó : 90,124,300,78,96
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