Ask
your own question, for FREE!
Mathematics
7 Online
OpenStudy (anonymous):
15 points no 3 of which are colinear are given on a plane. How many lines do they determine?
Still Need Help?
Join the QuestionCove community and study together with friends!
OpenStudy (anonymous):
This problem involves using combinations. My book gets C(15,2) = 105, and I'm not sure how they are getting it. (I'm not sure how to approach this problem)
OpenStudy (anonymous):
U need two points to make a line.....therefore no of ways to choose two points from 15 is c(15,2)
OpenStudy (anonymous):
Oh ok, didn't realize it was that simple. Thanks.
Can't find your answer?
Make a FREE account and ask your own questions, OR help others and earn volunteer hours!
Join our real-time social learning platform and learn together with your friends!
Join our real-time social learning platform and learn together with your friends!
Latest Questions
Bounty:
guys I'm losing all my motivation for school work how can I motivate myself to stop being lazy because even while I'm being on my work it still piles up and
albert14ring:
Can you give me suggestions on the fastest and most organized way to be ready early in the morning to go to school without any confusion or delay? The impor
Twaylor:
how to make good breakfast food ingredients : 1 mother flat bread bananas peanut
lovelove1700:
u00bfA quu00e9 hora es tu clase?Fill in the blanks Activity unlimited attempts left Completa.
glomore600:
find someone says that that one person your talking to doesn't really like you should I take their advice and leave or should I ask the person i'm talking t
Addif9911:
Him I dimmed the light that once felt mine, a glow I never meant to lose. I over-read the shadows, let voices crowd the room where only two hearts shouldu20
EdwinJsHispanic:
Poem to my mom who proved my point "You proved my point, I am a failure. but I kinda wish, you were my savior.
Bounty:
guys I'm losing all my motivation for school work how can I motivate myself to stop being lazy because even while I'm being on my work it still piles up and
15 hours ago
0 Replies
0 Medals
albert14ring:
Can you give me suggestions on the fastest and most organized way to be ready early in the morning to go to school without any confusion or delay? The impor
20 hours ago
8 Replies
0 Medals
Twaylor:
how to make good breakfast food ingredients : 1 mother flat bread bananas peanut
22 hours ago
0 Replies
0 Medals
lovelove1700:
u00bfA quu00e9 hora es tu clase?Fill in the blanks Activity unlimited attempts left Completa.
21 hours ago
2 Replies
0 Medals
glomore600:
find someone says that that one person your talking to doesn't really like you should I take their advice and leave or should I ask the person i'm talking t
1 day ago
5 Replies
0 Medals
Addif9911:
Him I dimmed the light that once felt mine, a glow I never meant to lose. I over-read the shadows, let voices crowd the room where only two hearts shouldu20
3 days ago
4 Replies
0 Medals
EdwinJsHispanic:
Poem to my mom who proved my point "You proved my point, I am a failure. but I kinda wish, you were my savior.
3 days ago
6 Replies
2 Medals