document.write( "Question 202241: Which one of the following is true? (1) log(7+3)=log7+log3 (2) (log10)^3=3log10 (3) ln(7e^10)=10+ln7 ? HELP. \n" ); document.write( "
Algebra.Com's Answer #152501 by Theo(13342)\"\" \"About 
You can put this solution on YOUR website!
laws of logarithms:
\n" ); document.write( "1. \"log+%28x%2Ay%29+=+log%28x%29+%2A+log%28y%29\"
\n" ); document.write( "2. \"log%28x%2Fy%29+=+log%28x%29+-+log%28y%29\"
\n" ); document.write( "3. \"log%28x%5Ey%29+=+y%2Alog%28x%29\"\r
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\n" ); document.write( "looking at your number 1:
\n" ); document.write( "\"log%287%2B3%29+=+log%287%29+%2B+log%283%29\"
\n" ); document.write( "this doesn't follow any rule above.
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\n" ); document.write( "looking at your number 2:
\n" ); document.write( "\"log%2810%5E3%29++=+3%2Alog%2810%29\"
\n" ); document.write( "this looks like it follows rule # 3 above.
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\n" ); document.write( "looking at your number 3:
\n" ); document.write( "\"ln%287e%5E10%29+=+10+%2B+ln%287%29\"
\n" ); document.write( "can't say this looks like any of the basic rules of logarithms.
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\n" ); document.write( "even though I'm not sure you wrote it correctly, number 2 is the only one that looks like it might be true.
\n" ); document.write( "The others don't look right.
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