Monday

September 1, 2014

September 1, 2014

Posted by **phyllys** on Tuesday, January 1, 2013 at 9:02pm.

log 3(x+4) = 2+log3(x-20)

the 3 in the part of log (3)should be lower just didn't know how to type it in here

- Pre-Cal -
**Reiny**, Tuesday, January 1, 2013 at 10:40pmlog3 (x+4) - log3 (x-20) = 2 , where clearly x > 20

log3 ( (x+4)/(x-20) ) = 2

(x+4)/(x-20) = 3^2 = 9

9x - 180 = x+4

8x = 184

x = 23

check:

LS = log3 27 = 3

RS = 2 + log3 3

= 2 + 1 = 3 = LS

**Answer this Question**

**Related Questions**

Logs. - Can you please help me with the following log. problems? thanxs! Solve ...

calculus - Please help me solve this equation. log[2](3)+log[2](x)=log[2](5)+log...

algebra homework - please check my answers. Solve the logarithmic equation. Be ...

Re: Algebra II - How to solve Log (9x+5) - Log ((x^2)-1) = 1/2 16 16 (The 16 is...

college algebra - solve the following logarithmic equation. 1. 2log(lower2) (x-2...

LOGARITHMS - HI THE QUESTION STATES THAT ONE SHOULD CALCULATE THE LOGS WITHOUT ...

math(Please help) - 1) use the properties of logarithms to simplify the ...

math - Logarithm!!! Select all of the following that are true statements: (a) ...

pre-cal - Some biologists model the number of species S in a fixed area A (such ...

Math - Solve the logarithmic equation. Express your solutions in exact form only...