3.5 x 9.27 x5.3
Tìm x: (X+3)x5.3=9.01x4
( X + 3 ) x 5.3 = 9.01 x 4
( X +3 ) x 5.3 = 36.04
X +3 = 36.04 : 5.3
X +3 = 6.8
X = 6.8 - 3
X = 3.8
Mong MN giải giùm nha!
*3^14:(3^9.27)+5^2.2^5-4^3
*2^3.5-3^2.4+4.6
314 : ( 39.27 ) + 52.25 - 43
= 314 : ( 39.33) + 52.25 - ( 22)3
= 314 : 312 + 52.25 - 26
= 32 + 25.(25 - 2)
= 9 + 32.23
= 9 + 736
=745
23.5 - 32.4 + 4.6
= 23.5 - 32.22 + 22.2.3
= 22.( 2.5 - 9 + 2.3)
= 4 .( 10 - 9 + 6 )
= 4 . 7
= 28
Tìm x: 9.27<=1/(3^x)<=27.243
\(9\cdot27\le\left(\dfrac{1}{3}\right)^x\le27\cdot243\)
\(\Leftrightarrow3^5\le\left(\dfrac{1}{3}\right)^x\le3^8\)
\(\Leftrightarrow\left(\dfrac{1}{3}\right)^{-5}\ge\left(\dfrac{1}{3}\right)^x\ge\left(\dfrac{1}{3}\right)^{-8}\)
=>-5>=x>=-8
hay \(x\in\left\{-5;-6;-7;-8\right\}\)
tìm x
-5/6.30/5<x<-7/9.27/7
Tìm x
56 - 3 (x+1) = 42
12. x - 33 = 9.27
56 - 3 ( x + 1) = 42
3( x +1) = 56 - 42
3( x + 1) = 14
x + 1 = 14/3
x = 14/3 - 1
x = 11/3
2/ 12.x - 33 = 9.27
12.x - 33 = 243
12x = 243 + 33
12x = 276
x = 276 : 12
x = 23
56 - 3 ( x + 1) = 42
3( x +1) = 56 - 42
3( x + 1) = 14
x + 1 = 14/3
x = 14/3 - 1
x = 11/3
2/ 12.x - 33 = 9.27
12.x - 33 = 243
12x = 243 + 33
12x = 276
x = 276 : 12
x = 23
Tick đúng nha
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1:9.27x=3x ai làm giúp
\(1:9.27^x=3^x\)
\(\frac{1}{9}.27^x=3^x\)
\(3^x=3^x\)
Vậy x có thể là bất cứ số tự nhiên nào
a) (x-2)5= 243
b) 1/9.27x = 3x
a) (x-2)5= 243
b) 1/9.27x = 3x
a)(x-2)^5=243
(x-2)^5=3^5
=>x-2=3
=>x=3+2
=>x=5
Vậy x=5
a)(x-2)5=243
\(\Leftrightarrow\left(x-2\right)^5=3^5\)
\(\Rightarrow x^5=3^5+2^5=5^5\)
\(\Rightarrow x=5\)
Tìm x
\(9.27\le\left(\frac{1}{3}\right)^x\le27.243\)
\(9.27\le\left(\frac{1}{3}\right)^x\le27.243\)
\(\Rightarrow243\le\left(\frac{1}{3}\right)^x\le6561\)
\(\Rightarrow\left(\frac{1}{3}\right)^{-5}\le\left(\frac{1}{3}\right)^x\le\left(\frac{1}{3}\right)^{-8}\)
\(\Rightarrow-5\le x\le-8\)
\(\Rightarrow\left\{{}\begin{matrix}x=-5\\x=-6\\x=-7\\x=-8\end{matrix}\right.\)
Vậy \(x\in\left\{-5;-6;-7;-8\right\}.\)
Chúc bạn học tốt!