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- If the 4th term of an arithmetic sequence is 24 and the 12th term is 56, whats the first term?
9 years ago

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Reiny
a+3d = 24
a+11d = 56
subtract them:
8d = 32
d = 4

sub into one of the above equations to find a
9 years ago
rei
12
8 years ago

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