ashworld ashworld

12-06-2018
Mathematics

contestada

write an explicit rule for the geometric sequence 4, 8, 16, 32, ..

Respuesta :

altavistard altavistard

12-06-2018

First term: a(1) = 4; common ratio: r = 2

Then:

a(n) = 4(2)^(n-1)

Check: Predict the 4th term using this formula:

a(4) = 4(2)^3 = 4(8) = 32 (correct)

Answer Link

JamesBondAgent007 JamesBondAgent007

12-06-2018

8÷4=2
16÷8=2
32÷16=2
multiply by 2

Answer Link

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