Question
What is the 7th term in the sequence 2,5,8,11ldots ? 14 17 20 23 Evaluate vert -5x+3vert when x=1 2 5 ) -2 o
Solution
4.4
(175 Votos)
Ricardo
Veterano · Tutor por 12 anos
Resposta
The correct answer for the first question is 23.To find the 7th term in the sequence
, we can observe that the sequence is an arithmetic sequence with a common difference of 3. To find the 7th term, we can use the formula for the nth term of an arithmetic sequence:
where
is the nth term,
is the first term,
is the term number, and
is the common difference.In this case,
,
, and
. Plugging these values into the formula, we get:
Therefore, the 7th term in the sequence is 20.The correct answer for the second question is 2.To evaluate
when
, we can substitute
into the expression:
Therefore, the value of
when
is 2.