document.write( "Question 1179199: 18.
\n" ); document.write( "https://answers.yahoo.com/question/index?qid=20210419170616AA87mlx
\n" ); document.write( "

Algebra.Com's Answer #808717 by MathLover1(20850)\"\" \"About 
You can put this solution on YOUR website!
nth term of the an arithmetic sequence is:\r
\n" ); document.write( "\n" ); document.write( "\"a%5Bn%5D=a%5B1%5D%2Bd%28n-1%29\"\r
\n" ); document.write( "\n" ); document.write( "given:\r
\n" ); document.write( "\n" ); document.write( "\"a%5B1%5D=49\"
\n" ); document.write( "\"a%5B8%5D=14\"\r
\n" ); document.write( "\n" ); document.write( "\"a%5Bn%5D=49%2Bd%28n-1%29\"...........use \"a%5B8%5D=14\" to calculate \"d\"\r
\n" ); document.write( "\n" ); document.write( "\"14=49%2Bd%288-1%29\"
\n" ); document.write( "\"14=49%2B7d\"
\n" ); document.write( "\"14-49=7d\"
\n" ); document.write( "\"7d=-35\"
\n" ); document.write( "\"d=-5\"\r
\n" ); document.write( "\n" ); document.write( "your formula is:\r
\n" ); document.write( "\n" ); document.write( "\"a%5Bn%5D=49-5%28n-1%29\"\r
\n" ); document.write( "\n" ); document.write( "find
\n" ); document.write( "\"a%5B27%5D\"
\n" ); document.write( "\"a%5B27%5D=49-5%2827-1%29\"
\n" ); document.write( "\"a%5B27%5D=49-5%2826%29\"
\n" ); document.write( "\"a%5B27%5D=49-130\"
\n" ); document.write( "\"a%5B27%5D=-81\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "
\n" );