Asked by Lerantia

The 3rd and 12th terms of an arithmetic progression are 12 and -24 respectively. What is the 50th term?
Answered by Reiny
a+2d=12
a+11d=-24
subtract them
9d = -36
d = -4
then a-8=12
a=20

term(50) = a+49d
= ...
Answered by gwinnett
what is the product of 23 and 45.
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