Find the first term of the arithmetic sequence in which t22=1008 and d= -8

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12-03-2018
Mathematics

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Find the first term of the arithmetic sequence in which t22=1008 and d= -8

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dizonc009 dizonc009 · Answer 1 · 2018-03-12T10:09:51+01:00

dizonc009 dizonc009

12-03-2018

tn = nth term
t22 = 22nd term
d = common difference
d = -8
n = number of terms
n = 22
.
tn = t1 + (n - 1)d
t22 = t1 + (n - 1)d
1008 = t1 + (22 - 1)-8
1008 = t1 + (21)-8
1008 = t1 + 168
1008 - 168 = t1
840 = t1

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shresthasusan44 shresthasusan44 · Answer 2 · 2018-03-12T14:29:11+01:00

shresthasusan44 shresthasusan44

12-03-2018

you misunderstood lol

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