Posted by oranges on Wednesday, May 25, 2011 at 8:06pm.
log2=log(x+5)-1
log 2 - log (x+5) = -1
log (2/(x+5)) = -1
10^log (2/(x+5)) = 10^-1 = 0.1
so
2/(x+5) = 0.1
2 = .1 x + .5
1.5 = .1 x
x = 15
oh right on! thanks!
You are welcome :)
Related Questions
Math Grade 12 Advance Functions - I need help understanding equivalent ...
Math HELP! - I posted a few questions and then went back and posted how I ...
science - I posted a new question at 8:22 p.m. I was wondering if someone could ...
calorimetry - please, someone answer my question i posted already I answered ...
Physics - please check over - Could I please get some further assistance on a ...
hca 270 - hey yea i posted earlier and i havent responded can some one please ...
algebra 1 - Reiny I posted a question earlier (about 3:00) and I have a question...
Chemistry repost - Whoever you are -- Please DO NOT USE TUTORS' NAMES where ...
Algebra - I posted this earlier but it didn't get answered. So I'm ...
Science-Help Please - What is a concept map. I've asked that same question ...
For Further Reading
