Find the indicated term for the geometric sequence a_3=32, r=-0.5, n=6

odcizit49o

odcizit49o

Answered question

2022-11-06

Find the indicated term for the geometric sequence a_3=32, r=-0.5, n=6

Answer & Explanation

Raven Hawkins

Raven Hawkins

Beginner2022-11-07Added 19 answers

the nth term of a geometric sequence is
x a n = a r n - 1
we need to find a the first term
a 3 = a ( - 0.5 ) 2 = 32
a = 32 ( - 0.5 ) 2 = 128
a 6 = 128 × ( - 0.5 ) 5 = - 4

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