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OpenStudy (anonymous):
15. The following is a geometric sequence. 1, -2, 4, -8, 16,… A. true B. false
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OpenStudy (luigi0210):
Do you know what a geometric sequence is?
OpenStudy (anonymous):
no
OpenStudy (luigi0210):
It is where each term after the first is obtained by multiplying the preceding term by the same number
OpenStudy (luigi0210):
so like 2, 6, 18, 54,... It is being multiplied by 3 each time
OpenStudy (anonymous):
Oh okay
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OpenStudy (anonymous):
So will it be true ?
OpenStudy (luigi0210):
Do you notice any pattern above?
OpenStudy (anonymous):
yeah its being multiplied by 2 each time
OpenStudy (luigi0210):
-2, and yes
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