Q. Find the 76 th term of the arithmetic sequence −26,−41,−56,…Answer:
Identify common difference: Identify the common difference in the arithmetic sequence.The common difference d is the difference between any two consecutive terms.For the given sequence: −41−(−26)=−41+26=−15
Use formula for nth term: Use the formula for the nth term of an arithmetic sequence.The nth term an of an arithmetic sequence can be found using the formula:an=a1+(n−1)dwhere a1 is the first term and d is the common difference.
Calculate 76th term: Calculate the 76th term using the formula.a76=a1+(76−1)(−15)a76=−26+75(−15)
Perform multiplication and addition: Perform the multiplication and addition to find the 76th term.a76=−26+(75×−15)a76=−26−1125a76=−1151