document.write( "Question 824135: Let A = {x | x < 5} and B = {x | x ≤ 7}.\r
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document.write( "Find A U B.\r
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document.write( "{x | x < 5}
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document.write( "{x | x ≤ 5}
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document.write( "{x | x ≤ 7}
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document.write( "{x | 5 < x ≤ 7} \n" );
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Algebra.Com's Answer #496210 by jim_thompson5910(35256) ![]() You can put this solution on YOUR website! A U B means \"either A or B\" in a sense, which basically means that x is either less than 5 OR x ≤ 7\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Put together, this means that x ≤ 7 because x < 5 is part of x ≤ 7\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Which is why the answer is {x | x ≤ 7} \n" ); document.write( " |