document.write( "Question 625602: read and answer each.
\n" ); document.write( "1.How do you think zero came into being?
\n" ); document.write( "2.Why is there a need for negative numbers?
\n" ); document.write( "3.Give an example where a rational number is used?
\n" ); document.write( "4.What lessons in the previous grades do you remember using irrational numbers?
\n" ); document.write( "5.Why is 0.5 a rational number? \n" ); document.write( "
Algebra.Com's Answer #393640 by Edwin McCravy(20060)\"\" \"About 
You can put this solution on YOUR website!
read and answer each.
\n" ); document.write( "1.How do you think zero came into being?
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document.write( "Because quantities were thought of as either distances \r\n" );
document.write( "traveled or corresponding to distances traveled and to\r\n" );
document.write( "travel a distance, you always need a starting place, and\r\n" );
document.write( "zero is that starting place\r\n" );
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\n" ); document.write( "2. Why is there a need for negative numbers?
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\r\n" );
document.write( "To indicate a distance traveled in the reverse direction.\r\n" );
document.write( "If positive numbers indicate travel to the right, negative\r\n" );
document.write( "numbers indicate travel to the left. If positive numbers\r\n" );
document.write( "indicate gain, negative numbers can indicate loss.  \r\n" );
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\n" ); document.write( "3.Give an example where a rational number is used?
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document.write( "\"2%2F3\"rds of 6 is 4.  \"2%2F3\" is a rational number\r\n" );
document.write( "because it is the quotient of two integers. Incidentally\r\n" );
document.write( "6 and 4 are also rational numbers because 6 can be written\r\n" );
document.write( "as \"6%2F1\" and 4 can be written as \"4%2F1\" and both of\r\n" );
document.write( "those are quotients of two integers.\r\n" );
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\n" ); document.write( "4.What lessons in the previous grades do you remember using irrational numbers?
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document.write( "a. Wnen using the Pythagorean theorem, we often found the\r\n" );
document.write( "   sides of right triangles which were square roots of\r\n" );
document.write( "   integers that were not perfect squares.  For instance\r\n" );
document.write( "   if the two legs of a right triangle are 2 and 3, the\r\n" );
document.write( "   hypotenuse is \"sqrt%282%5E2%2B3%5E2%29\" = \"sqrt%284%2B9%29\" = \"sqrt%2813%29\".\r\n" );
document.write( "   \"sqrt%2813%29\" is an irrational number.\r\n" );
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document.write( "b. When we were finding the circumference of a circle, we\r\n" );
document.write( "   used the number \"pi\", which is an irrational number. \r\n" );
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\n" ); document.write( "5.Why is 0.5 a rational number?
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\r\n" );
document.write( "  Because 0.5 is equal to \"1%2F2\" which is the quotient of two\r\n" );
document.write( "  integers.\r\n" );
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document.write( "Edwin
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