document.write( "Question 1183899: A group of 35 students performed in a school program. out of the 35,18 sang,19,danced, and 7 sang and danced Venn diagram​. thank you \n" ); document.write( "
Algebra.Com's Answer #814391 by Theo(13342)\"\" \"About 
You can put this solution on YOUR website!
you are stating that.....\r
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\n" ); document.write( "\n" ); document.write( "there are a total of 35 students.\r
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\n" ); document.write( "\n" ); document.write( "18 sang
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\n" ); document.write( "7 sand and danced.\r
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\n" ); document.write( "\n" ); document.write( "your numbers don't add up.\r
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\n" ); document.write( "\n" ); document.write( "first of all.\r
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\n" ); document.write( "\n" ); document.write( "if there are 35 students total, and 18 of them sang and 19 of them danced, that gets you a total of 37 students, assuming that none of hem both sang and danced.\r
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\n" ); document.write( "\n" ); document.write( "in order for there to be 35 students total, 2 of them must have sang and danced.\r
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\n" ); document.write( "\n" ); document.write( "that would give you 16 who sang only and 17 who danced only and 2 who sang and danced for a total of 35 students.\r
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\n" ); document.write( "\n" ); document.write( "if you had 18 students who sang and 19 students who danced and 7 who sang and danced, and the 7 who sang and danced were included in the number of those who sang and those who danced, then you would get:\r
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\n" ); document.write( "\n" ); document.write( "11 sand only and 12 danced only and 7 sang and danced.\r
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\n" ); document.write( "\n" ); document.write( "that would give you a total of 30 students.\r
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\n" ); document.write( "\n" ); document.write( "if you had 18 students who sang and 19 students who danced and 7 who sand and danced, and the 7 who sand and danced were not included in the number of those who sang and those who danced, then you would get:\r
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\n" ); document.write( "\n" ); document.write( "18 sand only and 19 danced only and 7 sang and danced.\r
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\n" ); document.write( "\n" ); document.write( "that would give you a total of 44 students.\r
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\n" ); document.write( "\n" ); document.write( "bottom line:\r
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\n" ); document.write( "\n" ); document.write( "you have a prblem with your numbers.\r
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\n" ); document.write( "\n" ); document.write( "it could not be 35 students.
\n" ); document.write( "it would only be 30 or 44.\r
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\n" ); document.write( "\n" ); document.write( "here are my two venn diagrams that capture what i think is the case.\r
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\n" ); document.write( "\n" ); document.write( "the first venn diagram is assuming that the 7 who sang and danced were included in the number of those who sang and those who danced.\r
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\n" ); document.write( "\n" ); document.write( "the second venn diagram is assuming that the 7 who sang and danced were not included in the number of those who sang and those who danced.\r
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\n" ); document.write( "\n" ); document.write( "neither of these two options will get you a total of 35 students.\r
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\n" ); document.write( "\n" ); document.write( "you need to go back and check again what they are asking you to do.\r
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