Ask your own question, for FREE!
Mathematics 18 Online
OpenStudy (anonymous):

What is the solution set of {x | x < -5} ∩ {x | x > 5}? all numbers less than -5 and greater than 5 the numbers between -5 and 5 the empty set all real numbers

OpenStudy (kainui):

What's your best guess?

OpenStudy (anonymous):

Phi

OpenStudy (anonymous):

the first choice

OpenStudy (agent0smith):

x < -5 so you know what that and this means x > 5 right? Do you know what the ∩ means?

OpenStudy (anonymous):

Phi

OpenStudy (agent0smith):

The ∩ symbol is the key here... it means and. You decided on this right? "all numbers less than -5 and greater than 5" Tell me one number that is less than -5 AND greater than 5.

OpenStudy (anonymous):

yeah I think its the first one but not sure, I am not good with these

OpenStudy (agent0smith):

Reread my above post. Especially the last line.

OpenStudy (anonymous):

@Tiffany6500 i'll give you a hint: Phi

ganeshie8 (ganeshie8):

tell me some person whose height is less than 5 feet AND more than 6 feet

ganeshie8 (ganeshie8):

thats same as the agent's question... the point is this :- u cannot say something is blue and green at the same time. a thing is blue, or green. it cannot be both blue and green at the same time.

ganeshie8 (ganeshie8):

``` Tell me one number that is less than -5 AND greater than 5. ``` a number is less than -5 or greater than 5 or equal to 5 it cannot be all 3 at the same time.

OpenStudy (anonymous):

ok

ganeshie8 (ganeshie8):

so what can we conclude ? :)

ganeshie8 (ganeshie8):

u need to see it for urself, explaining it more wud oly complicate things hmm

OpenStudy (anonymous):

empty set?

OpenStudy (agent0smith):

Try to tell us a number that is less than -5 AND greater than 5.

OpenStudy (agent0smith):

@Kainui I don't get why you were saying phi. The symbol isn't a phi, and doesn't really look that much like one (maybe if you rotated it)

OpenStudy (kainui):

@agent0smith I never said anything about phi.

OpenStudy (anonymous):

thanks for the help

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!
Latest Questions
Countless7Echos: Ah trying out the whole T.V girl drawing :p (I love drawing eyes)
39 minutes ago 1 Reply 1 Medal
kaelynw: starting to draw a hand
1 day ago 16 Replies 2 Medals
Twaylor: Rate it :D (Took 2 days)
2 days ago 7 Replies 0 Medals
XShawtyX: Art, Short Writing Assignment: Imagining Landscapes
2 hours ago 6 Replies 1 Medal
XShawtyX: Chemistry, Help ud83dude4fud83cudffe
2 days ago 13 Replies 1 Medal
kaelynw: tried a lil smt, the arm is off but i like the other stuff
3 days ago 27 Replies 3 Medals
kaelynw: art igg
3 days ago 14 Replies 1 Medal
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!