Question

if log105+log5x+1=log10(x+5)+1,then x is equal to

A) 1 B) 3 C) 5 D) 10

Answer 1

Answer:

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Step-by-step explanation:

log105+log(5x+1)=log10(x+5)+1log105+log5x+1=log10x+5+1  

log10[5(5x+1)]=log10[10(x+5)]log1055x+1=log1010x+5

5(5x+1)=10(x+5)55x+1=10x+5

5x+1=2x+10

3x=9

x=3