Problemas
Select the formula for the n^th term of the sequence. 5,15,45,ldots Show your work here 5(3)^n-1 5+3(n) 5+3(n-1) 5(3)^n None of the above
Roztwór
Zulema
experto · Tutor durante 3 años
4.1
(10 Votos)
Respuesta
To find the formula for the
term of the sequence
, we need to identify the pattern in the sequence.Let's examine the given terms:- The first term is 5.- The second term is 15.- The third term is 45.We can observe that each term is obtained by multiplying the previous term by 3. This indicates that the sequence is a geometric sequence with a common ratio of 3.The general formula for the
term of a geometric sequence is given by:
Where:-
is the
term-
is the first term-
is the common ratioIn this case, the first term
is 5 and the common ratio
is 3. Substituting these values into the formula, we get:
Therefore, the formula for the
term of the sequence
is
.So, the correct answer is: