alexisjill06 alexisjill06

13-08-2020
Mathematics

contestada

Given a geometric sequence with a1 = 3 and a4 = 24, find a2.

Respuesta :

eunice1234 eunice1234

13-08-2020

Answer: 6

Step-by-step explanation:

ax/ay=r^(x-y)

in this case it will be

a4/a1=r^(4-1)

24/3=r^3

8=r^3

r=2

----------------------------------

an=a1×r^(n-1) ⇔ geometric sequence formula

a2=3×2^(2-1)

a2=3×2^1

a2=3×2

a2=6

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