anonymous
  • anonymous
there are three terms of arithmetic sequence a1=decrease by 5 a2=decrease by 1 a3=twice the original term find the a3..???
Mathematics
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
LoL Derek ! XD
hartnn
  • hartnn
is the common difference also given ?
anonymous
  • anonymous
nope

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More answers

anonymous
  • anonymous
its 11
anonymous
  • anonymous
Given yung Common Difference ! 11 :P
hartnn
  • hartnn
common difference = A2-A1 = A3-A2 = 11
anonymous
  • anonymous
the common difference is 11, sorry. xD
agent0smith
  • agent0smith
This is written confusingly... a1=decrease by 5 a2=decrease by 1 a3=twice the original term decrease what by 5??
hartnn
  • hartnn
A3-A2 = 11 2n - (n-1) =11 can you find 'n' from here ??
anonymous
  • anonymous
the first term is decreased by5
hartnn
  • hartnn
true! wording are really confusing and question is really weird!
agent0smith
  • agent0smith
The first term is decreased by 5 to make what... ? the second term? itself? It doesn't make a lot of sense.
anonymous
  • anonymous
yup it really doesn't
hartnn
  • hartnn
@agent0smith look at this also http://openstudy.com/study#/updates/51138785e4b0e554778acff1 better notations
anonymous
  • anonymous
yup it really doesn't make any sense
agent0smith
  • agent0smith
That one makes a lot more sense. Lets use that question.
hartnn
  • hartnn
unfortunately no... thatsweird too... A2-A1 is not 11 actually....
anonymous
  • anonymous
hahahaha. xD that's my classmate. xD we have the same question
hartnn
  • hartnn
lol .ok :)
anonymous
  • anonymous
Yes !
hartnn
  • hartnn
and is ploeng in love with derek ?? O.o
anonymous
  • anonymous
hahaha. xD NO!!!!!!!!!!!!!!!
anonymous
  • anonymous
nope :))
hartnn
  • hartnn
okk. just wondering...
agent0smith
  • agent0smith
The other question seems broken too...
anonymous
  • anonymous
Yah ! I think so .
hartnn
  • hartnn
thats what i said...
anonymous
  • anonymous
2n-n-1=11 n=12 substitute it gave me 7,11 and 24
anonymous
  • anonymous
doesn't match with the common difference
hartnn
  • hartnn
ok...i guess, 11 as common difference(d) should naot have been given. in that case d = A2 - A1 = 4 then A3-A2 = 4 and find 'n'.
hartnn
  • hartnn
n=3 will give u a3 = 2n = 2*3 =6

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