Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
dariyana
Group Title
A triangle has the following measurements. What is a possible length for the third side?
AB = 5, BC = 7, CA = ?
2
12
5
13
 2 years ago
 2 years ago
dariyana Group Title
A triangle has the following measurements. What is a possible length for the third side? AB = 5, BC = 7, CA = ? 2 12 5 13
 2 years ago
 2 years ago

This Question is Closed

dariyana Group TitleBest ResponseYou've already chosen the best response.0
i think it B
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.0
*greater
 2 years ago

Wired Group TitleBest ResponseYou've already chosen the best response.2
Thanks @lgbasallote , brain fart :) Any two sides when added have to be greater than the third side. Therefore, AB + BC > CA If it was B then AB + AC = CA
 2 years ago

Wired Group TitleBest ResponseYou've already chosen the best response.2
If they were less than or equal to the third side, you wouldn't have a triangle.
 2 years ago

dariyana Group TitleBest ResponseYou've already chosen the best response.0
so it would be 13
 2 years ago

eyust707 Group TitleBest ResponseYou've already chosen the best response.0
dw:1341624363071:dw
 2 years ago

eyust707 Group TitleBest ResponseYou've already chosen the best response.0
i dont think 13 will work
 2 years ago

eyust707 Group TitleBest ResponseYou've already chosen the best response.0
We could make them all the way flat but they still wouldnt be 13
 2 years ago

dariyana Group TitleBest ResponseYou've already chosen the best response.0
when you add the two they equal 12
 2 years ago

eyust707 Group TitleBest ResponseYou've already chosen the best response.0
Yes so it cant be 12 either
 2 years ago

eyust707 Group TitleBest ResponseYou've already chosen the best response.0
other wise they would be flat on top of each other
 2 years ago

Wired Group TitleBest ResponseYou've already chosen the best response.2
No. AB + BC > CA 7 + 5 > CA 12 > CA Possible equations: 12 > 2 12 > 5 12 > 12 12 > 13 It's not 12 or 13, because 12 isn't greater than itself, and 12 isn't greater than a large number. Now, since CA = 2 or 5: AB < BC + CA (again, two sides added up are greater than the third) 7 < 5 + 2 7 < 7 7 < 5 + 5 7 < 10 7 can't be less than itself. 7 is less than 10, so you know 5 is the answer.
 2 years ago

eyust707 Group TitleBest ResponseYou've already chosen the best response.0
12 doesnt work: dw:1341624504291:dw
 2 years ago

dariyana Group TitleBest ResponseYou've already chosen the best response.0
lol so it 5
 2 years ago

eyust707 Group TitleBest ResponseYou've already chosen the best response.0
YEP! its 5 Cause 2 is too small dw:1341624584353:dw
 2 years ago

Calcmathlete Group TitleBest ResponseYou've already chosen the best response.0
Here. x < 5 + 7 x + 5 > 7 x < 12 x > 2 Therefore, you know that the set of numbers possible are \(2 < x < 12\). Which of those numbers is within that range?
 2 years ago

dariyana Group TitleBest ResponseYou've already chosen the best response.0
ok thanks you guys
 2 years ago

Calcmathlete Group TitleBest ResponseYou've already chosen the best response.0
You're welcome :)
 2 years ago
See more questions >>>
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.