blue22savannah blue22savannah

02-05-2017
Mathematics

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Write the first five terms of the arithmetic sequence. a4 = 22, a10 = 64

Respuesta :

ghanami ghanami

05-05-2017

hello :
the general term is :
an = a1+(n-1)×d
or : an = ap +(n-p)×d......d is common diffrence
let : n=10 and p= 4
a10 = a4 +(10-4)×d
64 = 22 + 6d
6d = 42
d= 7
conclusion :
a4 = 22
a3 = 22-7=15
a2=15-7=8
a1= 8-7=1
the first five terms : 1 , 8 , 15 , 22

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