document.write( "Question 998549: For the sequence given by an=4n+5, answer the following:\r
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document.write( "a. Find the first five terms\r
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document.write( "b. Find the sum of the first 25 terms \n" );
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Algebra.Com's Answer #616324 by fractalier(6550)![]() ![]() You can put this solution on YOUR website! Given the rule an=4n+5, the first five terms are for n=1 to n=5... \n" ); document.write( "9,13,17,21,25 \n" ); document.write( "The sum of the first twenty-five terms is found by (a25 = 105)... \n" ); document.write( "Sn = (n/2)(a1 + an) = (25/2)(9 + 105) = 1425 \n" ); document.write( " |