A.X€B(5) và10
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\(x\in B\left(5\right)=\left\{0;5;10;15;20;25;30;35;40;45;50;55;60;65;70;75;80;85;90;95;100;105;...\right\}\\ Mà:10< x< 100\Rightarrow x\in\left\{15;20;25;30;35;40;45;50;55;60;65;70;75;80;85;90;95\right\}\)
\(x\in B\left(13\right)=\left\{0;13;26;39;52;65;78;91;104;117;130;...\right\}\\ Mà:50< x< 100\Rightarrow x\in\left\{52;65;78;91\right\}\)
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10^1005 > 9^1005 = 3^2.1005 = 3^2010
=> 10^1005 > 3^2010
cho mik nha chế
Ta có:
3^2010 = ( 3^2 )^1005 = 9^1005
Vì 9^1005 < 10^1005 nên 3^2010 < 10^1005
Vậy 3^2010 < 10^1005
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10. Nhịp 2/4
11. nốt móc đơn là 4
nốt đen là 5
nốt trắng là 6
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9^10=3486784401
10^9=1000000000
3486784401>1000000000
Suy ra 9^10>10^9
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https://hoc24.vn/cau-hoi/tim-x-bieta-x-12-15-b-123-5x438.3496371618478
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\(a,x-\dfrac{1}{18}=\dfrac{-4}{15}\\ \Rightarrow x=\dfrac{-4}{15}+\dfrac{1}{18}\\ \Rightarrow x=\dfrac{-19}{90}\)
\(b,2x+\dfrac{3}{4}=x-\dfrac{1}{3}\\ \Leftrightarrow2x-x=-\dfrac{1}{3}-\dfrac{3}{4}\\ \Leftrightarrow x=\dfrac{-4-9}{12}\\ \Leftrightarrow x=-\dfrac{13}{12}\)
\(c,\dfrac{x-3}{5}=\dfrac{5}{x-3}\\ \Leftrightarrow\left(x-3\right)^2=25\\ \Leftrightarrow\left[{}\begin{matrix}x-3=5\\x-3=-5\end{matrix}\right.\\ \Rightarrow\left[{}\begin{matrix}x=8\\x=-2\end{matrix}\right.\)