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castortr0y [4]
3 years ago
14

What is the 12th term of the geometric sequence where *

Mathematics
2 answers:
Likurg_2 [28]3 years ago
5 0

Answer:

-224

Step-by-step explanation:

Geometric sequence is given by An = A*R^(n-1)

Given A7 = 7 and A10 = -56

A10/A7 = -8 = R^(10-7)

R^3 = -8

R = -2

A12 = A10*R^2

= -56*-2^2

= -224

elena55 [62]3 years ago
3 0

Answer:

Step-by-step explanation:

A7 = 7

A10 = -56

7xRxRxR = -56

R = -2

A12 = A10xRxR

= -56 x -2 x -2

= 224

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