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Mathematics 9 Online
OpenStudy (anonymous):

Determine whether the following statement is true or false. x E{z,b,p,w,s}

OpenStudy (mertsj):

Does that say that x is an element of that set?

OpenStudy (raden):

look at in bracket, is there the x :)

OpenStudy (anonymous):

i solved it.

OpenStudy (anonymous):

can i ask you guys another question?

OpenStudy (raden):

post it

OpenStudy (anonymous):

7 E{x|XE N and x is even} true or false

OpenStudy (raden):

obviously 7 is odd number, so it is false

OpenStudy (anonymous):

okay, i'm still trying to learn this material so i'm checking my work

OpenStudy (anonymous):

For the set C={2,4,6,8,11}, determine n(C)

OpenStudy (raden):

what do u think it

OpenStudy (anonymous):

5(C)?

OpenStudy (raden):

yes, there are 5 elements so. n(C) = 5

OpenStudy (anonymous):

so if a questions says D{} would the answer be 0?

OpenStudy (raden):

that just given set D={} what's the question there

OpenStudy (anonymous):

For set D={}, determine (n)D

OpenStudy (raden):

oh yes, empty set alwasy there is no element. it is 0

OpenStudy (anonymous):

okay thank you

OpenStudy (raden):

you're welcome

OpenStudy (anonymous):

can i ask another?

OpenStudy (raden):

sure

OpenStudy (anonymous):

Let A={6,7,8} B={5,9}. Find AxB.

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