09-11-2017
Mathematics

contestada

Sequence 13, 39, 65, 91,

Respuesta :

apologiabiology apologiabiology

09-11-2017

hum, multiply by 3? nope
hmmm, add 26? yep

the sequence is
[tex]a_n=a_{n-1}+26[/tex] when [tex]a_1=13[/tex]
or
[tex]a_n=13+26(n-1)[/tex] or [tex]a_n=26n-13[/tex]

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