Jacquelynn288 Jacquelynn288

20-07-2015
Mathematics

contestada

NEED HELP!!!!! Which of these sequences is a geometric sequence?
a. 1, 2, 4, 7, 11, 16, 22, …
b. 2, 4, 8, 14, 22, 38, …
c. 3, 6, 9, 12, 15, 18, 21, …
d. 3, 9, 27, 81, 343, 729, …

Respuesta :

20-07-2015

Only in d. are the number related by multiplication (Multiplied by 3 each time to get the next number in the sequence).

3 x 3 =9
9 x 3 =27
27 x 3 = 81 etc.

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