document.write( "Question 390005: what is the length of the segment that joins two points whose coordinates are (4,-1) and (7,5)?\r
\n" ); document.write( "\n" ); document.write( "1) 5
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Algebra.Com's Answer #276473 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "Note: is the first point . So this means that \"x%5B1%5D=4\" and \"y%5B1%5D=-1\".\r
\n" ); document.write( "\n" ); document.write( "Also, is the second point . So this means that \"x%5B2%5D=7\" and \"y%5B2%5D=5\".\r
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\n" ); document.write( "\n" ); document.write( "\"d=sqrt%28%28x%5B1%5D-x%5B2%5D%29%5E2%2B%28y%5B1%5D-y%5B2%5D%29%5E2%29\" Start with the distance formula.\r
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\n" ); document.write( "\n" ); document.write( "\"d=sqrt%28%284-7%29%5E2%2B%28-1-5%29%5E2%29\" Plug in \"x%5B1%5D=4\", \"x%5B2%5D=7\", \"y%5B1%5D=-1\", and \"y%5B2%5D=5\".\r
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\n" ); document.write( "\n" ); document.write( "\"d=sqrt%28%28-3%29%5E2%2B%28-1-5%29%5E2%29\" Subtract \"7\" from \"4\" to get \"-3\".\r
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\n" ); document.write( "\n" ); document.write( "\"d=sqrt%28%28-3%29%5E2%2B%28-6%29%5E2%29\" Subtract \"5\" from \"-1\" to get \"-6\".\r
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\n" ); document.write( "\n" ); document.write( "\"d=sqrt%289%2B%28-6%29%5E2%29\" Square \"-3\" to get \"9\".\r
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\n" ); document.write( "\n" ); document.write( "\"d=sqrt%289%2B36%29\" Square \"-6\" to get \"36\".\r
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\n" ); document.write( "\n" ); document.write( "\"d=sqrt%2845%29\" Add \"9\" to \"36\" to get \"45\".\r
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\n" ); document.write( "\n" ); document.write( "Now if each of your answer choices are in square roots, then this would mean that the answer is choice 4) \"sqrt%2845%29\"\r
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\n" ); document.write( "\n" ); document.write( "If you need more help, email me at jim_thompson5910@hotmail.com\r
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\n" ); document.write( "\n" ); document.write( "Also, feel free to check out my tutoring website\r
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\n" ); document.write( "\n" ); document.write( "Jim
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