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iheartfood
Which of the following sequences are geometric? A. 0.25, 0.35, 0.45, 0.55, 0.65 B. 3, 18, 108, 648, 3,888 C. 6, 1, 1/6, 1/36, 1/216 D. 1, 1/2, 1/3, 1/4, 1/5 **choose ALL that apply!! pls explain! thx :)
look at choice A divide the second term by the first term
what do you get
now divide the third number by the second number
0.45/0.35=1.285714286
is that the same as the last result
so choice A isn't geometric
each term divided by its previous term must give you the same number everytime
B is right?? cuz its all multiplied by 6 act time?
yep, B is definitely geometric
kk and so is C right?? i keep getting 1.66666666667 is C also geometric?
kk and D is not right?? so my answers are B and C?