document.write( "Question 976758: S50, when a1 = 6 and d = 2/7 \n" ); document.write( "

Algebra.Com's Answer #598588 by Cromlix(4381) $\"\"$ $\"About$

You can put this solution on YOUR website!
a(n) = a(1) +(n - 1)d
\n" ); document.write( "a(50) = 6 + (50 - 1)2/7
\n" ); document.write( "a(50) = 6 + 14
\n" ); document.write( "a(50) = 20
\n" ); document.write( "S(n) = [n(a(1)+ a(n)]/2
\n" ); document.write( "s(50) = [50(6 + 20)]/2
\n" ); document.write( "s(50) = 650
\n" ); document.write( "Hope this helps:-) \n" ); document.write( "

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