Question 118700
log5+logx=2?

remember: logs can be combined as such: Log(x) + Log(y) -> Log(x*y)
so: log(5) + log(x) = 2
becomes: log(5*x)=2 or log(5x)=2

logs can be changed into exponents, and "log" is base 10.

so: log(5x)=2 becomes: 5x= {10^2} (10^2 = 10 squared)
5x= {10^2}
5x=100
divide both sides by 5
x=20