SOLUTION: log base 2 9+log base 2 a= log base 2 11

Algebra ->  Exponential-and-logarithmic-functions -> SOLUTION: log base 2 9+log base 2 a= log base 2 11      Log On


   

Question 706222: log base 2 9+log base 2 a= log base 2 11
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
+log%282%2C9%29+%2B+log%282%2Ca%29++=+log%282%2C11%29+
The general rule is:
+log%28a%2Cb%29+%2B+log%28a%2Cc%29+=+log%28a%2C+b%2Ac%29+, so
+log%282%2C+9a%29+=+log%282%2C11%29+
Another general rule is:
If +log%28a%2Cb%29+=+log%28a%2Cc%29+, then
+b=c+, so
+9a+=+11+
+a+=+11%2F9+