document.write( "Question 5391: What is the sequence here? 4,9,19,39,79. Find the next term. \n" ); document.write( "
Algebra.Com's Answer #2744 by longjonsilver(2297)\"\" \"About 
You can put this solution on YOUR website!
4,9,19,39,79\r
\n" ); document.write( "\n" ); document.write( "the thing is with these...spot a pattern of sorts. Now 4,9,19,39,79 means nothing, but what about 5, 10, 20, 50, 80? That is much more recognisable as a pattern...\r
\n" ); document.write( "\n" ); document.write( "n = \"1\", \"2\", \"3\", \"4\", \"5\"
\n" ); document.write( "--> \"5x1\", \"+++5x2\", \"+++5x4\", \"+++5x8\", \"+++5x16\"
\n" ); document.write( "--> \"5x2%5E0\", \"5x2%5E1\", \"5x2%5E2\", \"5x2%5E3\", \"5x2%5E4\"\r
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\n" ); document.write( "\n" ); document.write( "--> \"5x2%5E%28n-1%29\"\r
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\n" ); document.write( "\n" ); document.write( "Now the original question is 1 less than each of these terms, so final answer is \"5x2%5E%28n-1%29+-+1\"\r
\n" ); document.write( "\n" ); document.write( "jon.\r
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