the 8th term of an arithmetic seqence is 12and its 12th term is 8.what is the algebraic expression for this sequence
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the algebraic expression is --- a +7d = 12 and
a +11d = 8
using the formula, = a + ( n-1) d
a +11d = 8
using the formula, = a + ( n-1) d
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8th term = a+(8-1)d
12th term = a+(12-1)d
where "a" is the first term and "d" is the common difference .
12th term = a+(12-1)d
where "a" is the first term and "d" is the common difference .
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