document.write( "Question 420260: the 2nd and 6th terms are 1 and 27.find (a)the first term (b)common difference (c)10th term
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Algebra.Com's Answer #293724 by ewatrrr(24785)\"\" \"About 
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document.write( "Hi
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document.write( "Arithmetic Series
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document.write( "\"a%5Bn%5D=a%5B1%5D%2B%28n-1%29%2Ad\"
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document.write( "\"a%5B2%5D=a%5B1%5D%2B%282-1%29%2Ad+=+1\"  | \"a%5B1%5D=+1+-+d\"
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document.write( "\"a%5B6%5D=a%5B1%5D%2B%286-1%29%2Ad+=+27\"
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document.write( "  (1-d) + 5d = 27
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document.write( "          4d = 26
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document.write( "           d = 26/4 = 13/2   \"a%5B1%5D=+-11%2F2+\"
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document.write( "CHECKING our Answer***
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document.write( "\"a%5B2%5D=+-11%2F2+%2B+13%2F2+=+1\"
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