Posted by **Lucy** on Saturday, March 29, 2008 at 6:37pm.

Solve, round to four decimal places if necessary:

log4(x-9)=2

Answer:

x-9=4^2

x-9=16

x=11

log4(z)+log4(z-3)=1

Answer:

z+z-3=1

2z=4

z=2

Thanks for checking my work.

## Answer This Question

## Related Questions

- Logarithms - Solve log4 x + log4(x-2)=log4(15) I know how do the example in my ...
- Algebra 2 - Simplify: 1. 2log10^5+log10^4 2. 2log3^6-log3^4 3. log4^40-log4^5 4...
- math - Solve the equation algebraically. Round the result to three decimal ...
- Algebra II - Please check the following: Solve log4(m-3)+ log4(m+3) =2 Answer: 1...
- Math - Evaluate the expression without using a calculator: log4(2)= ____? Use a ...
- Math(Please check) - solve for x: log4 X - log4 2 = 2 log(2x) = 2 Now what do I ...
- Trig/Pre-Calc - Could someone please help me on this problem. I'm really ...
- Math - solve for x: log4 X - log4 2 = 2 log(2x) = 2 Now what do I do?
- precalc - I don't understand how to do these w/o calc. I tried to write it in a ...
- Precalc - Using logarithms to rewrite the expression: 1.) log4.(4)^3x= 2.) 6 ...

More Related Questions