Question 743345: Combine logarithms to solve for x:
a) ln (3-x) = 0.75
B) log x + log (2x+1) = 1
Answer by lwsshak3(11628)   (Show Source):
You can put this solution on YOUR website! Combine logarithms to solve for x:
a) ln (3-x) = 0.75
3-x=e^(.75)
x=3-e^.75
x≈0.8830
..
B) log x + log (2x+1) = 1
log[(x)(2x+1)]=log(10)
x(2x+1)=10
2x^2+x-10=0
(2x+5)(x-2)=0
x=2
or
x=-5/2, (reject,x>0)
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