Find a1 given an = 24, r = 2/3, n = 4

Brooke Richard

Brooke Richard

Answered question

2022-11-16

Find a1 given an = 24, r = 2/3, n = 4

Answer & Explanation

Houston Ochoa

Houston Ochoa

Beginner2022-11-17Added 19 answers

This question is not clear about where the sequence is geometric or arithmetic.
The nth term of a geometric sequence is given by t n = a × r n - 1 .
24 = a × ( 2 3 ) 4 - 1
24 = a × 8 27
a = 24 8 27
a = 81

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