96mertcank96
given A = {2,3,5,7,8} and B = {3,5,8,9}
What is A U B?
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morganFREEDDOM
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358 easy men
96mertcank96
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how did you get that answer?
morganFREEDDOM
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comon sense?
96mertcank96
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yes but there must be a mathematical technique you used to get the answer
morganFREEDDOM
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no just common sense
morganFREEDDOM
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trust me men simple
morganFREEDDOM
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why i think i chose them answers?
morganFREEDDOM
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use comon sense look at hte numbers
morganFREEDDOM
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and thats ur answer
96mertcank96
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yeah but i need to explain how i got the answer and i cant write used common sense?????
that would make your statement invalid to me
morganFREEDDOM
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u must fail at math if u have no common sense
96mertcank96
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i have no answer choice as 3,5,8 and thank you for being civilized and kindhearted -_-
inkyvoyd
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Oh yeah, now you hav TWO ignorant people
inkyvoyd
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A = {2,3,5,7,8} and B = {3,5,8,9}|dw:1364782794558:dw|
inkyvoyd
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find what's in the center. That is what the Union symbol means.
96mertcank96
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3,5,and 8
96mertcank96
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yes but i have no answer choice like that whatsoever
inkyvoyd
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that's cause that's the intersection.
inkyvoyd
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My bad. The union is the concatenation of the two
96mertcank96
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yes wouldnt that be the middle?
inkyvoyd
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A = {2,3,5,7,8} and B = {3,5,8,9}
join the two sets together and take out repeats
96mertcank96
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3 and 5
then that would explain it...
96mertcank96
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and 8
inkyvoyd
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No.
{2,3,5,7,8}U{3,5,8}
is {2,3,5,7,8}
inkyvoyd
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I'm sorry what I said before is the intersection.
96mertcank96
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i have no answer choice like that
i have
{5}
{5,8}
{2,3,4,7,9}
{2,3,4,5,7,8,9}
inkyvoyd
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Read this article. You will findwhat you seek. My first venn diagram image and the answer obtained from that is incorrect. You must put the two sets together and take out repeats.
96mertcank96
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yes i know ive read it but my answer choices make that article invalid...
inkyvoyd
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yeah, well can't help you there. The answer should be what agrees with that wiki article.
96mertcank96
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you can never trust Wiki...
inkyvoyd
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Well, I'm as worthy of trust as wiki. The wiki math articles have yet to fail me. If you don't want to read wiki, just google union set theory and see if what you get disagrees.
96mertcank96
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yeah aint nobody got time for that so thank you for your help!
inkyvoyd
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np :)