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Mathematics
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OpenStudy (marcelie):
help please .
first term is 6 , common difference is 7 . find the 6th term
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OpenStudy (dayakar):
An= a+(n-1)d
here , a is the first term
d is common difference
n = nth term =6
substitute the values and get the answer
OpenStudy (marcelie):
that equals 41 ?
OpenStudy (marcelie):
correct?
OpenStudy (mayankdevnani):
yup ! you are correct
OpenStudy (marcelie):
ah okay.
how about this one ? first term is 4 , common difference is 5 . find the 4th term
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OpenStudy (mayankdevnani):
use DAYAKAR'S way
OpenStudy (marcelie):
i did it that way but i got 20 . my answer sheet says 19. so idk what i did wrong
OpenStudy (mayankdevnani):
a=4,d=5
use a+(n-1)d
OpenStudy (mayankdevnani):
n=4
OpenStudy (mayankdevnani):
substitute in above equation and get your answer
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OpenStudy (marcelie):
isnt first term 5 ?
OpenStudy (mayankdevnani):
nope
OpenStudy (mayankdevnani):
OpenStudy (marcelie):
how come the other equation first term was 6?
OpenStudy (marcelie):
oh nvm lol got it :)
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OpenStudy (mayankdevnani):
good
OpenStudy (marcelie):
do you mind helping me with this other equation
OpenStudy (mayankdevnani):
why not ?
OpenStudy (mayankdevnani):
but quick
OpenStudy (marcelie):
okay . find the first term or a 1 of an arithemetic sequence if a 6 = 12 and a 14 = 28
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OpenStudy (marcelie):
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