document.write( "Question 1206543: Find the sum of the first 30 terms of an arithmetic series if the 1st term is 5 and the 30th term is 100. \n" ); document.write( "

Algebra.Com's Answer #844092 by ikleyn(52788) $\"\"$ $\"About$

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\n" ); document.write( "Find the sum of the first 30 terms of an arithmetic series if the 1st term is 5 and the 30th term is 100.
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document.write( "Use the formula for the sum of the first n terms of an AP in the form\r\n" );
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document.write( "     =  =  = (5+100)*15 = 105*15 = 1575.    ANSWER\r\n" );
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\n" ); document.write( "\n" ); document.write( "For introductory lessons on arithmetic progressions see \r
\n" ); document.write( "\n" ); document.write( "    - Arithmetic progressions\r
\n" ); document.write( "\n" ); document.write( "    - The proofs of the formulas for arithmetic progressions \r
\n" ); document.write( "\n" ); document.write( "    - Problems on arithmetic progressions \r
\n" ); document.write( "\n" ); document.write( "    - Word problems on arithmetic progressions\r
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