Howell Zimmerman
06/20/2024 · Senior High School
For each of these sequences, work out its \( n \)th term rule. \( \begin{array}{ll}\text { a } 10,11,12,13,14, \ldots & \text { b } 5, \\ \text { c } 22,23,24,25,26, \ldots & \text { d } 43\end{array} \)
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To find the \( n \)th term rule for each of the given sequences, we will analyze the patterns in the sequences.
**Sequence a: \( 10, 11, 12, 13, 14, \ldots \)**
This sequence starts at 10 and increases by 1 for each subsequent term. The first term corresponds to \( n = 1 \).
- For \( n = 1 \), the term is 10.
- For \( n = 2 \), the term is 11.
- For \( n = 3 \), the term is 12.
- For \( n = 4 \), the term is 13.
- For \( n = 5 \), the term is 14.
The \( n \)th term can be expressed as:
\[
a_n = 10 + (n - 1) = n + 9
\]
**Sequence b: \( 5 \)**
This sequence consists of a single term, which is always 5, regardless of \( n \). Therefore, the \( n \)th term is:
\[
b_n = 5
\]
**Sequence c: \( 22, 23, 24, 25, 26, \ldots \)**
This sequence starts at 22 and increases by 1 for each subsequent term. The first term corresponds to \( n = 1 \).
- For \( n = 1 \), the term is 22.
- For \( n = 2 \), the term is 23.
- For \( n = 3 \), the term is 24.
- For \( n = 4 \), the term is 25.
- For \( n = 5 \), the term is 26.
The \( n \)th term can be expressed as:
\[
c_n = 22 + (n - 1) = n + 21
\]
**Sequence d: \( 43 \)**
Similar to sequence b, this sequence consists of a single term, which is always 43. Therefore, the \( n \)th term is:
\[
d_n = 43
\]
In summary, the \( n \)th term rules for the sequences are:
- \( a_n = n + 9 \)
- \( b_n = 5 \)
- \( c_n = n + 21 \)
- \( d_n = 43 \)
Quick Answer
- \( a_n = n + 9 \)
- \( b_n = 5 \)
- \( c_n = n + 21 \)
- \( d_n = 43 \)
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