Q. Find the 54 th term of the arithmetic sequence −15,4,23,…Answer:
Arithmetic Sequence Formula: To find the 54th term of an arithmetic sequence, we need to use the formula for the nth term of an arithmetic sequence, which is:an=a1+(n−1)dwhere an is the nth term, a1 is the first term, n is the term number, and d is the common difference between the terms.
Identify First Term: First, we identify the first term a1 of the sequence, which is given as −15.
Find Common Difference: Next, we need to find the common difference d. We can do this by subtracting the first term from the second term:d=4−(−15)d=4+15d=19
Calculate 54th Term: Now that we have the first term and the common difference, we can find the 54th term a54 using the formula:a54=a1+(54−1)da54=−15+(53)(19)a54=−15+1007a54=992
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