Jawab:
C
Penjelasan dengan langkah-langkah:
[tex]\begin{aligned}&\frac{5^{x+1}+5^{x+2}+5^{x+3}}{50}=\frac{310}{4}\\&5^x\cdot5^1+5^x\cdot5^2+5^x\cdot5^3=3875\\&5^x(5+5^2+5^3)=3875\\&155\cdot5^x=3875\\&5^x=25\\&x=2\end{aligned}[/tex]
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Jawab:
C
Penjelasan dengan langkah-langkah:
[tex]\begin{aligned}&\frac{5^{x+1}+5^{x+2}+5^{x+3}}{50}=\frac{310}{4}\\&5^x\cdot5^1+5^x\cdot5^2+5^x\cdot5^3=3875\\&5^x(5+5^2+5^3)=3875\\&155\cdot5^x=3875\\&5^x=25\\&x=2\end{aligned}[/tex]