busra09
30.08.2019 •
Mathematics
Write the explicit formula for the geometric sequence represented by the recursive formula.
a1 = 4
an = 5 · an-1
a) an = 4 · 5n
b) an = 5 · 4n
c) an = 4 · 5n-1
d) an = 5 · 4n-1
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Ответ:
Option C is correct.
Explanation:
Explicit formula for the geometric sequence is given by:
where r is the common ratio
Given the recursive formula for geometric sequence:
For n =2
⇒
For n =3
⇒
Common ratio(r):
⇒ r = 5
Therefore, the explicit formula for the geometric sequence represented by the recursive formula is:
Ответ:
$212.40
Step-by-step explanation:
180+ (180* 18%)= Total Cost
180+ 32.40= Total Cost
212.40= Total Cost