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kingkuka1700
06.10.2019 •
Mathematics
In a geometric sequence, a4=54 and a7=1458. what is the 12th term?
a. 5,616
b. 354,294
c. 14,350,365
d. 234,812,358
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Ответ:
so r^3 = 1458 / 54 = 27
r = 3
12th term = a7 * r^5 = 1458* 3^5 = 354,294
Note r could also be -3 but not in this case because 12th term is positive
Its b
Ответ:
Answer-
Solution-
If there are 2 terms of a Geometric Sequence
and
where (n > k), then
where, r = common ration of the G.P.
Here,
Putting in the equation,
Again putting the values in the equation,
Ответ:
step-by-step explanation: