Find the indicated quantity of the arithmetic sequence.
-$a _ { 1 } = 25 , a _ { n } = - 631 , d = - 16 ; \text { find } n$
A)41
B)10
C)42
D)58

Name: Find the indicated quantity of the arithmetic sequence. -$a _ { 1 } = 25 , a _ { n } = - 631 , d = - 16 ; \text { find } n$ A)41 B)10 C)42 D)58
Brand: Quizplus
Rating: 4.8 (31 reviews)

Question

Quizplus · Accepted Answer

The formula for the nth term of an arithmetic sequence is $a_n = a_1 + (n - 1)d$. Substituting the given values, we get $-631 = 25 + (n - 1)(-16)$. Solving for $n$, we find $n = 42$.

Find the Indicated Quantity of the Arithmetic Sequence a1=25,an=−631,d=−16; find na _ { 1 } = 25 , a _ { n } = - 631 , d = - 16 ; \text { find } na1​=25,an​=−631,d=−16; find n

Find the Indicated Quantity of the Arithmetic Sequence $a _ { 1 } = 25 , a _ { n } = - 631 , d = - 16 ; \text { find } n$