Asked by Maddie
Find the common ratio for the sequence 2, - 4/5, 8/25, - 16/125, 32/625, etc . (5 points)
A) 2/5
B) 4/5
C) - 2/5
D) The sequence is not geometric, therefore there is no common ratio.
A) 2/5
B) 4/5
C) - 2/5
D) The sequence is not geometric, therefore there is no common ratio.
Answers
Answered by
oobleck
well, shucks. If there's a common ratio, just take any two consecutive terms.
r = (-4/5)/2 = -2/5
Yep, that works all the way across.
r = (-4/5)/2 = -2/5
Yep, that works all the way across.
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