1) Tim x biet: a. 575 - ( 6x + 70 ) = 445 d. ( x - 47 ) - 115 = 0 b. 315 + ( 125 - x ) = 435 e. 315 + ( 146 - x ) = 401 c. 6x -5 = 613 f. ( x - 36 ) : 18 = 12 LUY THUA 1) Viet gon cac tich sau bang cach dung luy thua: a. 7. 7. 7 b. 7. 38. 7. 25 c. 2. 3. 8. 12 d. x. x. y. y. x. y. x e. 1000. $10^{2}$. 10 2) Viet ket qua phep tinh duoi dang mot luy thua a. $3^{15}$ : $3^{5}$ b. $9^{8}$ c. $125 : 5^{2}$ d. $7^{5}$ : 343 e. $a^{12}$ : $a^{8}$ f. $x^{7}$ g. $2^{5}$. $2^{3}$. $2^{4}$ 3) Tim so tu nhien n biet rang: a. $2^{n}$ = 16 d. $7^{n}$ = 49 b. $4^{n}$ = 64 e. 50 < $2^{n} < 100 c. $15^{n}$ = 225 f. $5^{n}$ = 625 4 ) Tim so tu nhien x ma: a. $x^{50}$ = x b. 125 = $x^{3}$ c. 64 = $x^{2}$ d. 90 = 10. $3^{x}$ 5) Tim so tu nhien x biet: a. 100 - 7 ( x - 5 ) = 31 + $3^{3}$ b. 12 ( x - 1 ) : 3 = $4^{3}$ = $2^{3}$ c. 24 + 5 x = $7^{5}$ : $7^{3}$ d. 5x - 206 = $2^{4}$ THU TU THUC HIEN PHEP TINH Dang I: Thuc hien phep tinh : 1. 4. $5^{2}$ - 18 : $3^{2}$ 2. $3^{2}$. 22 - $3^{2}$. 19 3. $2^{4}$. 5 - [ 131 - ( 13 - 4 ) ² ] 4. 100 : { 250 : [ 450 - 4. $5^{3}$ - $2^{2} . 25 )]} 5 . $2^{3}$ . 15 - [ 115 - ( 12-5 ) ² ] 6. 30 . { 175 : [ 355 - ( 135 + 37. 5 )]} 7. 160 - ( $2^{3}$. $5^{2}$ - 6. 25 8. 5871 : [ 928 - ( 247 - 82 ) . 5 ] 9. 132 - [ 116 - ( 132 - 128 ) ² 10. 16 : { 400 : [ 200 - ( 37 + 46 . 3 )]} 11. { 1184 : [ 96 - 124 : 31 ] -2 } . 3651 12. 46 - [( 16 + 71 . 4 ) : 15 ] - 2 13. {[ 126 - ( 36 -31 ) ² . 2 ] -9 } . 1001 14. 315 - [( 60 - 41 ) ² - 361 ] . 4217 + 2885 15. [( 46 - 32 ) ² - ( 54 - 42 ) ² ] . 36 - 1872 16. [( 14 + 3 ) . 2 - 5 ] . 91 - 325 Dang II: Tim x la so tu nhien biet : a. ( x -6 ) ² = 9 b. 128 -3 ( x + 4 ) = 23 c. [( 14 + 28 ) . 3 + 55 ] : = 35 d. ( 12x - $4^{3} $ ) . $8^{3}$ = 4 . $8^{4}$ e. 720 : [ 41 - ( 2x - 5 )] = $2^{3}$ . 5 Cac bn oi giup mk nha nhanh nha de ti nua em ho mk di hoc roi mk nop cho thay ko thi thay danh chet the nhe giup mk di xin do mk cam on cac bn truoc nha

Làm giúp mik 2 bài này nhé ( Có giải thích nhé , chỉ phần true/false thôi , giải thích = cách nêu dẫn chứng để thể hiện đó là true/false )

Tóm tắt câu chuyện Lão Hạc nhưng thêm muối vào :v

Các mod ơi giúp em vs ạ A=X-8/căn x+1 .Tìm GTNN của A

Em hãy điền 1 giới từ chỉ thời gian(on,in,at) vào mỗi khoảng trống We traveled overnight to Nha Trang and arrived _____5o'clocm His father died ___1907 Are you doing anything special ______the weekend? Hurry up! We've got to go___ five minutes I haven't seen Loan for a few day , I last saw her ____Tuesday I'll phone you on Monday morning _____about 10 o'clock, okay? Nam's grandfather died ____the age of 79 The price of electricity is going up_____October There are usually a lot of parties _____ new year's eve I like walking around the town____night Lan and Nam always go out for a meal ____Their wedding anniversary 2. Em hãy viết các câu sau làm cho nghĩa ko thay đổi 1. How long is that road => what...... 2.He lelf school when he was 12 years old =>He left school at..... 3.How old is that building? =>what's..... 4.the building is 48 storeys high => It's.... 5.The rope is eight meters long => It's...... M.n ơi giúp mình nha , mai mình nộp rồi,😢😢😢😢😢😢 vote 5 sao liền

Ai giúp mình với ạ.Mình cảm ơn nhiều. 😊😊😊

chia đơn thức nhé x mũ 30 / (-x)mũ 24 (-12/25x mũ4 y ³ z mũ 5)/4/5 x mũ 4 y z ²

Ex1: Word formation 1. Cities for a long time/ be/ attraction/ many people/ the coutryside. __________________ 2. in fact, there/ many things/ account/ this. ______________________ 3. first and foremost/ abig city/ much/ exciting/ than/ a sleepy coutryside. _____________________________ 4. It/ offer/ people/ variety/ choices/ education/ entertaiment services. _________________________ 5. for instance, almost all big university/ well- qualified teachers/ professors/ are/ big cities. __________________________________ 6. besides, only/ city/ can people enjoy/ colorful night life such as cinemas, night clubs, street food,... ______________________________________ 7. Another plus for/ an urban life/ be /high standard/ living. ___________________________ 8. in/ such cities as Ha Noi, Ho Chi Minh, Da Nang, there/ be /supermarket, shopping malls where you/ can shop/ almost everything/ from vegetables/ perfume/ pearls. _________________________________________ 9. last but not least, cities provide people, especially adults/ a variety of work choices. _____________________________________ 10. many industries/ located/ there. It/ be/ also/ promising land/ for/ youngsters/ look for / their luck. _____________________________________ 11. To sum up, the attractions/ a big city/ be/ still there and it/ still/ lure people/ everywhere to it. ____________________________________________

Vẽ chini cute nhó!!!!!!!!!!!!!!!!!!!!!!!!!! Ko spam........... các thứ, thanks

Bé cao 78cm,bé cao thêm 13cm nữa thì chiều cao của bé bằng chị.Hỏi chị cao bao nhiêu xăng ti met