Find the nth term of the sequence if: a₁ = -2.5, d = 4, and n = = 15 57.5 47.5 61.5 53.5-

asked Sep 22, 2023 83.7k views

2 votes

Find the nth term of the sequence if:

a₁ = -2.5, d = 4, and n = = 15
57.5
47.5
61.5
53.5-

4.6k points

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4 votes

Answer: a₁₅=53.5

Explanation:

a₁=-2.5 d=4 n=15

$\boxed {a_n=a_1+(n-1)d}\\\\a_(15)=a_1+(15-1)d\\\\a_(15)=a_1+14d\\\\a_(15)=-2.5+14(4)\\\\a_(15)=-2.5+56\\\\a_(15)=53.5$

Pvilas answered Sep 26, 2023

3.7k points

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