tink nhé 

x =0,301; 0,302; 0,303; 0,304; 0,305 ;0,306;0,307 ;0,308;0,309

do la cac so :0.2;0.1;0.01,0.02,0.03;0.04;0.25;0.15;0.26;0.29;0.12

x=0,301;0,302;0,303;0,304;0,304;0.305;0,306;0,307;0,308;0,309

x= 0,301;0,302;0,303;0,304;0,305;0,306;0,307;0,308;0,309

tk nhé

ai k mình mình k lại

nhân 2 số với 100

x = 0,4 ; 0,5 ; 0,6 ; 0,7 ; 0,8 ; 0,9 ; 0,11 ; 0,12 ; 0,13

0,3 = 0,300

0,31 = 0,310

9 số có thể :

0,301 ; 0,302 ; 0,303 ; 0,304 ; 0,305 ; 0,306 ; 0,307 ; 0,308 ; 0,309

...........

nhiều loại lắm

0,30 nha bạn

chúc bạn học tốt

0,301 ; 0,302 ; 0,303 ; 0,304 ; 0,305

0,306 ; 0,307 ; 0,308 ; 0,309

\(B=x+\dfrac{0,2-0,375+\dfrac{5}{11}}{-0,3+\dfrac{9}{16}-\dfrac{15}{22}}\)

\(=x+\dfrac{\dfrac{1}{5}-\dfrac{3}{8}+\dfrac{5}{11}}{-\left(\dfrac{3}{10}-\dfrac{9}{16}+\dfrac{15}{22}\right)}\)

\(=x+\dfrac{\dfrac{1}{5}-\dfrac{3}{8}+\dfrac{5}{11}}{-\dfrac{3}{2}\left(\dfrac{1}{5}-\dfrac{3}{8}+\dfrac{5}{11}\right)}\)

\(=x+\dfrac{1}{-\dfrac{3}{2}}\)

\(=x+\dfrac{-2}{3}\)

Với \(x=-\dfrac{1}{3}\), ta được:

\(B=-\dfrac{1}{3}+\dfrac{-2}{3}=-\dfrac{3}{3}=-1\)

B = -1

giúp mình vớiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii

\(a,A=\dfrac{9-3x+x^2+10x+25-x^2+1}{\left(x-1\right)\left(x+5\right)}\\ A=\dfrac{7x+35}{\left(x-1\right)\left(x+5\right)}=\dfrac{7\left(x+5\right)}{\left(x-1\right)\left(x+5\right)}=\dfrac{7}{x-1}\\ b,A\in Z\\ \Leftrightarrow x-1\inƯ\left(7\right)=\left\{-7;-1;1;7\right\}\\ \Leftrightarrow x\in\left\{-6;0;2;8\right\}\left(tm\right)\\ b,A< 0\Leftrightarrow x-1< 0\left(7>0\right)\\ \Leftrightarrow x< 1;x\ne-5\\ c,\left|A\right|=3\Leftrightarrow\dfrac{7}{\left|x-1\right|}=3\Leftrightarrow\left|x-1\right|=\dfrac{7}{3}\\ \Leftrightarrow\left[{}\begin{matrix}x=\dfrac{7}{3}+1=\dfrac{10}{3}\left(tm\right)\\x=-\dfrac{7}{3}+1=-\dfrac{4}{3}\left(tm\right)\end{matrix}\right.\)