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dreaaacx
28.06.2019 •
Mathematics
The sequence 5, 10, 20, 40 … shows the number of “likes” on a viral video each day starting with the day it was published. a) what is the recursive rule for the sequence? b) what is the explicit rule for the sequence?
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Ответ:
a)
, where
.
b)![a_n=5(2)^{n-1}](/tpl/images/0028/4688/15bd0.png)
Step-by-step explanation:
The given sequence is
The first term of the sequence is
The second term is![a_2=10](/tpl/images/0028/4688/7b4bb.png)
The common ratio for this sequence can be determined using any two consecutive terms in the sequence.
Using the first two terms, the common ratio is
a) The recursive rule is given by,
b) The explicit rule is given by![a_n=a_1r^{n-1}](/tpl/images/0028/4688/6dad5.png)
Ответ:
y = 7
Step-by-step explanation: