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Mathematics 13 Online
OpenStudy (anonymous):

Find the next three terms in the geometric sequence. Select 3 answers. 5, -10, 20, -40 ..

OpenStudy (amistre64):

it looks like each term is doubled and negated from the last one

OpenStudy (amistre64):

what 40 doubled?

OpenStudy (amistre64):

\[a_n = -2a_{n-1}\]

OpenStudy (lgbasallote):

do you get that explanation @isagg ?

OpenStudy (amistre64):

i always assume the deafening silence to be an indicator of utter acceptance :)

OpenStudy (lgbasallote):

ahh yes.. i cannot agree more

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