15egriniute 15egriniute

04-03-2018
Mathematics

contestada

fine the nth term of the sequance 5,9,13,17,21

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Banabanana Banabanana

04-03-2018

a₁ = 5
a₂ = 9

d = a₂-a₁ = 9-5 = 4

a₉ = 5+4(9-1) = 5+32 = 37

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