What's the value of x? Enter your answer in the box. x = {}
2 answers:
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Answer:
Step-by-step explanation:
we have
step 1
Eliminate the parenthesis
The symbol of the term 3x is incorrect, must be positive instead of negative
so
Group terms that contain the same variable
Combine like terms
A
this is a geometric sequence since there exists a common ratio r between the terms
r = =
=
= 3
B
to obtain the next term in the sequence multiply the previous term by 3
= 3
← recursive rule
C
the n th term of a geometric sequence is
=
where is the first term in the sequence
= 7 ×
← explicit rule