document.write( "Question 940744: Use the definition of logarithm to simplify each expression.\r
\n" ); document.write( "\n" ); document.write( "log10 10\r
\n" ); document.write( "\n" ); document.write( "log10 1,000\r
\n" ); document.write( "\n" ); document.write( "log10 10−4 the -4 is to the -4 power
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Algebra.Com's Answer #573363 by MathLover1(20850)\"\" \"About 
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\n" ); document.write( "simplify each expression: these are common logarithms\r
\n" ); document.write( "\n" ); document.write( "Logarithms that use \"10\" as the base are called common logarithms.\r
\n" ); document.write( "\n" ); document.write( "a logarithm answers the question:\r
\n" ); document.write( "\n" ); document.write( "How many of one number do we multiply to get another number? The number we are multiplying is called the \"base\".\r
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\n" ); document.write( "\n" ); document.write( "\"log%2810%2C+10%29\" here we are asking \"how many \"10\"s need to be multiplied together to get \"10\"?\" and answer is \"1\"\r
\n" ); document.write( "\n" ); document.write( "so, we have \"log%2810%2C+10%29=1\"\r
\n" ); document.write( "\n" ); document.write( "\"log%2810%2C+1000%29\" \"how many \"10\"s need to be multiplied together to get \"1000\"?\" and answer is \"3\" because \"10%2A10%2A10=1000\" or \"10%5E3=1000\"\r
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\n" ); document.write( "\n" ); document.write( "so, we have \"log%2810%2C+1000%29=3\"\r
\n" ); document.write( "\n" ); document.write( "\"log%2810%2C+10%5E-4%29+\"\r
\n" ); document.write( "\n" ); document.write( "\"-4%2Alog%2810%2C+10%29+\" ...since \"log%2810%2C+10%29=1\"\r
\n" ); document.write( "\n" ); document.write( "\"-4%2A1+\"\r
\n" ); document.write( "\n" ); document.write( "\"-4+\"\r
\n" ); document.write( "\n" ); document.write( "so, \"log%2810%2C+10%5E-4%29=-4+\"\r
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