Đáp án+Giải thích các bước giải:
`x+128=3×5×(10^2-71)-307`
`x+128=3×5×(100-71)-307`
`x+128=15×29-307`
`x+128=435-307`
`x+128=128`
`x=128-128`
`x=0`
Vậy `x=0`
`x + 128 = 3 xx 5 xx ( 10^2 - 71 ) - 307`
`⇔ x + 128 = 3 xx 5 xx ( 100 - 71 ) - 307`
`⇔ x + 128 = 3 xx 5 xx 29 - 307`
`⇔ x + 128 = 15 xx 29 - 307`
`⇔ x + 128 = 435 - 307`
`⇔ x + 128 = 128`
`⇔ x = 128 - 128`
`⇔ x = 0`
Vậy `, x = 0 .`
Sinx=cosx Giúp em câu 6,7,8 ạ. Giải thích nữa ạ
Vẽ anime/chibi nha mn =333 NL: Hnay được lấy lại mt ròi, lâu quá không cập nhật tin tức rồi =')) À mà dạo này nghe bảo có gr Hoidap247 Confesstion đang nổi đúng không mn nhỉ? Hình như là từ bài viết của bạn Cháu cô Phương Hằng thì phải =v="???
_______________________________ 10. She left university 2 years ago It is ________________________________________ 11. My mother was the most warm-hearted person I've ever known. I have _____________________________________________ 12. I haven't been able to see them for over a year. It is _______________________________________________ 13. It stared to rain at 2 o'clock. It has ____________________________________________ 14. I have never been to the ballet before. It is __________________________________________________ 15. John and Mary moved to Edinburgh twenty years ago. It is _______________________________________________ 16. The police started looking for him two months ago. For two months now the _________________________________ 17. I have never seen a dirtier-looking dog. This is ______________________________________________ 18. Mary rang hours and hours ago. It it hours ____________________________________ 19. It is ages since Alan visited his parents. Alan ______________________________________________ 20. John has not had his hair cut for over six months. It is ___________________________________________________ 21. I has never seen such a beautiful building. It's the most ____________________________________________
Bài 6. Điện phân có màng ngăn 200 gam dd muối ăn bão hòa 29,25% . a) Tính thể tích các khí thoát ra ở điện cực. b. Tính khối lượng NaOH thu được.
Mọi người giải hộ em với ạ mai em đi học
Read the passage about different tastes in music. Match the person with his/her opinion= Read the passage about different tastes in music. Match the person with his/her opinion. Write your answers in the space provided. James My favourite type of music ranges from Rap and R&B to Punk and Hard Rock. The only genre of music I don’t really care for is Country. I think it’s a good thing to have a wide ranging taste in music. Joongih I don’t really have a favourite type of music. If a song comes out on the radio and it catches my attention, I find out the name and the artist or group who sings it and I then download it. Eventually these songs of different genres become what I listen to in my spare time. Timmy My favourite genre in music is country music because the singers express their feelings. Country music is different because the entire singers relate to their childhood. They also relate to their family members. They express their love through the music. ____1. This person listens to every kind of music. ____2. This person thinks it is good to listen to a wide range of music. ____3. This person likes an emotional kind of music. ____4. This person can’t stand country music. ____5. This person downloads a good song. A. James B. Joongih C. Timmy
g) 4x = 5y = 6z và x - y - z = 12. k) x/2 = y/5; y/4 = z/3 và x - y + z =14.
chỉ mình câu 9 và 15 nha mong mn giúp mình đăng 1 lần rồi mà toàn trả lời sai
Mn giải giúp em, em ko cố ý gây spma nhé, nếu admin xóa câu hỏi hãy nhắn cho em để em giải thích ạ!!!!
cho x,y,z>0 thỏa mãn x+y+z=1. Tìm GTLN của P= (1+x)/(1-x) + (1+y)/(1-y) + (1+z)/(1-z) - 2.(y/x + z/y + x/z)
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