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What is the 12th term of the geometric sequence where * A7 = 7 and 10 = -56 O-448 0-224 O -112 0 -96
Question
What is the 12th term of the geometric sequence where *
A7 = 7 and 10 = -56
O-448
0-224
O -112
0 -96
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Mathematics
3 years
2021-08-04T20:15:27+00:00
2021-08-04T20:15:27+00:00 2 Answers
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Answers ( )
Answer:
Step-by-step explanation:
A7 = 7
A10 = -56
7xRxRxR = -56
R = -2
A12 = A10xRxR
= -56 x -2 x -2
= 224
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