Math Problem Statement
In the arithmetic sequence of -7,-4,-1,2 which term is 44?
Solution
To find which term in the arithmetic sequence is equal to 44, we can use the general formula for the -th term of an arithmetic sequence:
Where:
- is the -th term,
- is the first term,
- is the common difference,
- is the position of the term.
Step 1: Identify the first term and the common difference
- The common difference is found by subtracting the first term from the second term:
Step 2: Set up the equation to find
We are looking for the term that equals 44, so set :
Step 3: Solve for
-
Start by isolating the term involving :
-
Divide both sides by 3:
-
Finally, solve for :
The term that equals 44 is the 18th term in the arithmetic sequence.
Would you like more details or have any questions?
Here are 5 related questions you might explore:
- How do you find the sum of the first 18 terms of this arithmetic sequence?
- What is the 25th term of this arithmetic sequence?
- How can you determine if a sequence is arithmetic or not?
- What happens to the general term formula if the common difference is negative?
- How do you find the common difference if only two non-consecutive terms are given?
Tip: When solving for in an arithmetic sequence, make sure to carefully isolate the variable by following each algebraic step methodically.
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Math Problem Analysis
Mathematical Concepts
Arithmetic Sequence
Formulas
Arithmetic sequence nth term formula
Theorems
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Suitable Grade Level
Grades 9-12