document.write( "Question 251800: For the following right angle, find the side length x round to the nearest tenth
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Algebra.Com's Answer #183488 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "To find the unknown length, we need to use the Pythagorean Theorem.\r
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\n" ); document.write( "\n" ); document.write( "Remember, the Pythagorean Theorem is \"a%5E2%2Bb%5E2=c%5E2\" where \"a\" and \"b\" are the legs of a triangle and \"c\" is the hypotenuse.\r
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\n" ); document.write( "\n" ); document.write( "Since the legs are \"12\" and \"10\" this means that \"a=12\" and \"b=10\"\r
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\n" ); document.write( "\n" ); document.write( "Also, since the hypotenuse is \"x\", this means that \"c=x\".\r
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\n" ); document.write( "\n" ); document.write( "\"a%5E2%2Bb%5E2=c%5E2\" Start with the Pythagorean theorem.\r
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\n" ); document.write( "\n" ); document.write( "\"12%5E2%2B10%5E2=x%5E2\" Plug in \"a=12\", \"b=10\", \"c=x\" \r
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\n" ); document.write( "\n" ); document.write( "\"144%2B10%5E2=x%5E2\" Square \"12\" to get \"144\".\r
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\n" ); document.write( "\n" ); document.write( "\"144%2B100=x%5E2\" Square \"10\" to get \"100\".\r
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\n" ); document.write( "\n" ); document.write( "\"244=x%5E2\" Combine like terms.\r
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\n" ); document.write( "\n" ); document.write( "\"x%5E2=244\" Rearrange the equation.\r
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\n" ); document.write( "\n" ); document.write( "\"x=sqrt%28244%29\" Take the square root of both sides. Note: only the positive square root is considered (since a negative length doesn't make sense).\r
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\n" ); document.write( "\n" ); document.write( "\"x=2%2Asqrt%2861%29\" Simplify the square root.\r
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\n" ); document.write( "\n" ); document.write( "\"x=15.6205\" Approximate the right side with a calculator.\r
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\n" ); document.write( "\n" ); document.write( "Answer:\r
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\n" ); document.write( "\n" ); document.write( "So the solution is approximately \"x=15.6205\" which means that the hypotenuse is roughly 15.6 (rounded to the nearest tenth) units long.
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