find the next 3 terms in the sequence

label Algebra
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-100,-40--16,-6.4

May 19th, 2015

This is a geometric sequence.  To get from one term to the next, we multiply by the "common ratio."

We find the common ratio by dividing the second element (-40) by the first element (-100).  We get 0.4

-100 x 0.4 = -40

-40 x 0.4 = -16

-16 x 0.4 = -6.4

So the next three terms are:

-6.4 x 0.4 = -2.56

-2.56 x 0.4 = -1.024

-1.024 x 0.4 = -0.4096

Hope this helps!

May 19th, 2015

30,-10,10/3,-10/9

May 19th, 2015

Again, find the ratio:  -10/30 = -1/3

Multiply by -1/3 each time to get your next value

May 19th, 2015

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