the sum of three consecutive terms in an arithmetic sequence is 30, and their product is 360.
Find the three terms.
Let x denote the middle term and d the common difference.
well i got so far:
ya, thats as far as I got and i am still stumped. I tried all kinds of things but i cant seem to get the right sum and multiplied values
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middle term must be 10
do i divide by 36? how do i know what to put in for the middle parts? i remember class mates saying something by going up or down by a k, or a 1 or something. is there a rule or something like that I have to know?
ok, using your notation, x is the middle term, d is the common difference:
(x-d) + x + (x+d) = 30.
so what's x?