Respuesta :
Answer:
look below
Step-by-step explanation:
The common ratio is 1:4 because we are multiplying the previous number by 4
The nth term for this sequence is quite simple. To find the nth term, take the base, 3, and multiply by the nth 4th. This can be written as 3*4^n+1
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Answer:
see explanation
Step-by-step explanation:
the sequence is geometric and has common ratio r
(a)
r = [tex]\frac{a_{2} }{a_{1} }[/tex] = [tex]\frac{12}{3}[/tex] = 4
(b)
the nth term of a geometric sequence is
[tex]a_{n}[/tex] = a₁ [tex]r^{n-1}[/tex]
where a₁ is the first term and r the common ratio
here a₁ = 3 and r = 4 , then
[tex]a_{n}[/tex] = 3 . [tex]4^{n-1}[/tex]
