document.write( "Question 1091746: Find the sum of the first 30 terms of the arithmetic sequence : 10,5,0,-5 \n" ); document.write( "

Algebra.Com's Answer #706240 by MathTherapy(10552) $\"\"$ $\"About$

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Find the sum of the first 30 terms of the arithmetic sequence : 10,5,0,-5
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Use the formula for the sum of an AP when the number of terms, the 1st term, and the common difference are known, which is:  
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document.write( " ----- Substituting 30 for n, 10 for , and - 5 for d
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document.write( "Sum of this AP, or  \n" );
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