The first three terms of a sequence are given. Write your answer as a decimal or whole number. Round to the nearest thousandth (if necessary).403,395,387,…Find the 37th term.Answer:
Q. The first three terms of a sequence are given. Write your answer as a decimal or whole number. Round to the nearest thousandth (if necessary).403,395,387,…Find the 37th term.Answer:
Determine Common Difference: First, we need to determine the common difference in the sequence by subtracting the second term from the first term and the third term from the second term. Calculation: 395−403=−8 and 387−395=−8.
Confirm Arithmetic Sequence: Since the common difference is consistent, we can confirm that this is an arithmetic sequence with a common difference of −8.
Find 37th Term Formula: To find the 37th term, we use the formula for the nth term of an arithmetic sequence: an=a1+(n−1)d, where an is the nth term, a1 is the first term, n is the term number, and d is the common difference.
Plug in Values: We plug in the values we know into the formula: a37=403+(37−1)(−8).
Calculate Term: Now we calculate the term inside the parentheses: 37−1=36.
Multiply Common Difference: Next, we multiply 36 by the common difference −8: 36×−8=−288.
Add to Find 37th Term: Finally, we add this result to the first term to find the 37th term: 403+(−288)=115.