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Mathematics 8 Online
OpenStudy (anonymous):

What is the 35th term of the arithmetic sequence where a1 = 13 and a17 = -35

OpenStudy (anonymous):

I'm thinking its -83, but I'm not sure. Anyone help is appreciated.

OpenStudy (jdoe0001):

so, what did you get the common ratio?

OpenStudy (ivettef365):

An = a + (n-1)d

OpenStudy (jdoe0001):

between 13 and -35, there are 48 units of difference 48 units split between 16 elements, excluding the 1st term that is it'd give use a common ratio of 3 it goes from positive to negative, thus the common ratio will be -3

OpenStudy (jdoe0001):

so use that in the arithmetic sequence as shown by ivettef365 :)

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