Write the first five terms of the geometric sequence a1=20 r = 3

Question

Mathematics

Brittany Watkins

27 November, 08:40

Write the first five terms of the geometric sequence a1=20 r = 3

+3

Answers (2)

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Zachariah Schneider · Answer 1

Step-by-step explanation:

note:

the nth term is : An = A1 * r^ (n-1)

put : n = 2 you have the second term A2 = 20 * (3) ^ (2-1)

A2 = 60

n=3 A3 = ...

n=4 A4 = ...

n=5 A5 = ...

Justice · Answer 2

Multiply by 3 each time

20 60 180 540 1620