document.write( "Question 1115161: In a geometric sequence, the common ratio is -5. The sum of the first 3 terms is 147.What is the value of the first term in the sequence? \n" ); document.write( "
Algebra.Com's Answer #730051 by stanbon(75887)\"\" \"About 
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In a geometric sequence, the common ratio is -5. The sum of the first 3 terms is 147.What is the value of the first term in the sequence?
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\n" ); document.write( "a + ar + ar^2 = 147
\n" ); document.write( "a(1+r+r^2) = 147
\n" ); document.write( "a(1-5+25) = 147
\n" ); document.write( "a = 147/21
\n" ); document.write( "a = 7
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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