siershaGenn siershaGenn

13-09-2016
Mathematics

Answered

What is the value of the 11th term in the following geometric sequence?

-5, -10, -20, -40

-5,120

-100

-180

-19,531,250

Verified Answer :

nicholas2021265 nicholas2021265

14-09-2016

the geometric sequence above is -52^(x-1)
plugging in 11 we get -52^10
which is -5120

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meerkat18 meerkat18

15-09-2016

we are given the geometric sequence -5, -10, -20, -40. The geometric factor of this sequence is equal to 2. In this case, the formula is expressed: an = -5 (2)^(n-1) where n is an integer. In this case, a11 is equal to -5 (2)^(11-1) equal to -5120.

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