document.write( "Question 263227: the height of a triangle is twice the base. the area is 9 square inches. find the base. \n" ); document.write( "
Algebra.Com's Answer #193983 by unlockmath(1688)\"\" \"About 
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Hello,
\n" ); document.write( "Let's establish x to represent the base. We know the formula for the area of a triangle is: A=1/2BH So now let's plug in the values.
\n" ); document.write( "9=1/2(x)(2x) Simplify this to be:
\n" ); document.write( "9=1/2(2x^2) The 1/2 and 2 turn to 1 so we have:
\n" ); document.write( "9=x^2 Square root both sides to get:
\n" ); document.write( "x=plus and minus 3
\n" ); document.write( "Minus 3 doesn't work so it's 3 inches for the base.
\n" ); document.write( "Got it?
\n" ); document.write( "RJ
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\n" ); document.write( "www.math-unlock.com
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