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Re: Geometry question +20 points!!!!!!!!!!!!!

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pieguy26 is not online. pieguy26
Joined: 16 Aug 2009
Total Posts: 32025
04 Jan 2014 09:37 PM
how many angles are formed by 15 distinct rays with a common endpoint?

offers on 400 robux
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9tails327 is not online. 9tails327
Joined: 02 Jun 2008
Total Posts: 30356
04 Jan 2014 09:37 PM
how many angles are formed by 15 distinct rays with a common endpoint?

Pretty sure

7
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pieguy26 is not online. pieguy26
Joined: 16 Aug 2009
Total Posts: 32025
04 Jan 2014 09:38 PM
more
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timothyb903 is not online. timothyb903
Joined: 30 Oct 2010
Total Posts: 6406
04 Jan 2014 09:39 PM
99
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pieguy26 is not online. pieguy26
Joined: 16 Aug 2009
Total Posts: 32025
04 Jan 2014 09:40 PM
srsly guys im in harvard this is important
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snappy111 is not online. snappy111
Joined: 27 Sep 2008
Total Posts: 3184
04 Jan 2014 09:40 PM
8
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timothyb903 is not online. timothyb903
Joined: 30 Oct 2010
Total Posts: 6406
04 Jan 2014 09:40 PM
ITS 99 CUZ IF IT WAS 12 IT WOULD BE 66
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swordron is not online. swordron
Joined: 23 Jun 2008
Total Posts: 27432
04 Jan 2014 09:41 PM
99
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twister1976 is not online. twister1976
Joined: 17 Sep 2010
Total Posts: 2250
04 Jan 2014 09:42 PM
67.5? idk
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9tails327 is not online. 9tails327
Joined: 02 Jun 2008
Total Posts: 30356
04 Jan 2014 09:43 PM
The number of pairs is 12C2 = (12*11)/(1*2) = 66 angles
=============================================
Cheers,
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pieguy26 is not online. pieguy26
Joined: 16 Aug 2009
Total Posts: 32025
04 Jan 2014 09:43 PM
whats the formula to figure it out
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pieguy26 is not online. pieguy26
Joined: 16 Aug 2009
Total Posts: 32025
04 Jan 2014 09:43 PM
@ tails (yahoo answers)
thats for 12 angles

dont blindly copy and paste
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EliChicken2002 is not online. EliChicken2002
Joined: 09 Apr 2011
Total Posts: 778
04 Jan 2014 09:45 PM
72
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Powmonkey is not online. Powmonkey
Joined: 13 Nov 2009
Total Posts: 35292
04 Jan 2014 09:46 PM
105

#COMRADEPOWPOWER
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Smooks12 is not online. Smooks12
Joined: 20 Nov 2010
Total Posts: 6658
04 Jan 2014 09:47 PM
30. Interior and exterior. If not 30, then its 29, 28, or 27. Maybe 31 or 32.
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glaring is not online. glaring
Joined: 18 May 2013
Total Posts: 16053
04 Jan 2014 09:47 PM
LOLD @TAILS COPY PASTE FAIL
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twister1976 is not online. twister1976
Joined: 17 Sep 2010
Total Posts: 2250
04 Jan 2014 09:47 PM
How about you figure it out for yourself, a bunch of third graders are not going to know this, okay :P
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pieguy26 is not online. pieguy26
Joined: 16 Aug 2009
Total Posts: 32025
04 Jan 2014 09:48 PM
I got 105, but am not sure if it was correct.
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snappy111 is not online. snappy111
Joined: 27 Sep 2008
Total Posts: 3184
04 Jan 2014 09:48 PM
15(14)/2

105
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Powmonkey is not online. Powmonkey
Joined: 13 Nov 2009
Total Posts: 35292
04 Jan 2014 09:49 PM
105

It's 15 choose 2 = (15*14)/(1*2) = 105

#COMRADEPOWPOWER
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pieguy26 is not online. pieguy26
Joined: 16 Aug 2009
Total Posts: 32025
04 Jan 2014 09:49 PM
twister- but the one that does pays off

there are smart people on here as well.
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Powmonkey is not online. Powmonkey
Joined: 13 Nov 2009
Total Posts: 35292
04 Jan 2014 09:49 PM
I'm taking pre-calculus.

You could also use wolfram alpha, that'd probably a lot more helpful.

#COMRADEPOWPOWER
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pieguy26 is not online. pieguy26
Joined: 16 Aug 2009
Total Posts: 32025
04 Jan 2014 09:49 PM
I did a=15(15-1)/2
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swordron is not online. swordron
Joined: 23 Jun 2008
Total Posts: 27432
04 Jan 2014 09:50 PM
Wait did you say you're in harvard, how old are you?
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rappingkillerb is not online. rappingkillerb
Joined: 17 Jun 2011
Total Posts: 15409
04 Jan 2014 09:51 PM
105
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