Posted by lisa on Sunday, March 10, 2013 at 8:52am.
solve each equation 1) log5log2x=1 2) 2log(x+1)=5

math  Reiny, Sunday, March 10, 2013 at 9:45am
1)
log5  log(2x) = 1
log(5/2x) = 1
5/(2x) = 10^1
20x = 5
x = 1/4
2)
2log(x+1) = 5
log(x+1) = 5/2
10^(5/2) = x+1
316.227766 = x+1
x = 315.227766
OR
log(x+1)^2 = 5
(x+1)^2 = 10^5
x+1 = ±√(10^5) , but clearly x >1
x+1 = 316.227766..
x = 315.227766..

math  Mutale, Sunday, March 10, 2013 at 10:00am
1)> log 5 + log 2 + log x = 1
>log (5 X 2) + log x = 1
>1 + log x = 1
>log x = 0
>x = 10^0
>x = 1
#2 has me twisted.
Answer This Question
Related Questions
 precalculus  solve the logarithmic equation . express solution in exact form ...
 college algebra  solve the logarithmic equation. Please show all work. log5x+...
 Algebra 2  Express as a logarithm of a single number or expression: 1. 5log4^p+...
 acc. alg 2  exponentiating to solve equations: solve the eaquation, cheack for ...
 Logarithm help  using logarithms to solve exponential equations. 5^1+x = 2^1x ...
 check!  here is the question: log5(x4)= log7x solve for x. These are just base...
 math(log)  find x if a) 1/81=3^2x1 b)log2x+ 3/log2x = 4
 Algebra 2  Solve the equation log2(x^220)  log2X =3 the two is the base*
 Algebra II  Log6(6^9)=??? Answer: 9 Ine^3x=??? Answer: 3x Use log5(2) = 0....
 Algebra 2  Can someone help me solve this problem please? The directions are to...
More Related Questions