A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 4 years ago
2r + 1 < 5 and –2r – 4 ≥ 6
Is it empty ?
anonymous
 4 years ago
2r + 1 < 5 and –2r – 4 ≥ 6 Is it empty ?

This Question is Closed

nenadmatematika
 4 years ago
Best ResponseYou've already chosen the best response.1no, from the first inequality you get r<2 and from the second you get r<=5 so the answer is r<=5

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0This when there is 'or' but now we are dealing with 'and' => intersection. When you want to graph it will look like : dw:1328566495750:dw

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Or is it all real numbers ?

nenadmatematika
 4 years ago
Best ResponseYou've already chosen the best response.1no the real picture is like this

nenadmatematika
 4 years ago
Best ResponseYou've already chosen the best response.1dw:1328566721597:dw

nenadmatematika
 4 years ago
Best ResponseYou've already chosen the best response.1dw:1328566814637:dw

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0oohh! So the intersection is only on point r<=5 ?

nenadmatematika
 4 years ago
Best ResponseYou've already chosen the best response.1no, it's the intersection of the two intervals so the intersection area are all numbers from infinity to 5, including 5

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Okay, what is the solution set ?

nenadmatematika
 4 years ago
Best ResponseYou've already chosen the best response.1if the question is: ''Is it empty?'' your answer is ''no'' and if they ask you to write the solution your answer is: x\[\epsilon(\infty,5]\]
Ask your own question
Sign UpFind more explanations on OpenStudy
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.