document.write( "Question 380058: I need help! This is due tomorrow! (It's 7th grade math by the way.)
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document.write( "The question says: Write an equation to find the value of x so that each pair of polygons has the same perimeter. Then solve.\r
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document.write( "1. A triangle has sides that say: x+6, x+9, and x+3. A rectangle beside it has sides that say x+4 and x+1.\r
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document.write( "2. A hexagon has sides that all read 5x. A triangle next to it has sides that say x+14, x+17, and 8x+9.\r
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document.write( "PLEASE help me! \n" );
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Algebra.Com's Answer #269753 by Earlsdon(6294)![]() ![]() ![]() You can put this solution on YOUR website! 1) For the triangle, let the perimeter = P, then... \n" ); document.write( "(x+6)+(x+9)(+x+3) = P Simplify. \n" ); document.write( "3x+18 = P \n" ); document.write( "For the rectangle, let the perimeter = P (the same P), then... \n" ); document.write( "2(x+4)+2(x+1) = P Simplify. \n" ); document.write( "2x+8+2x+2 = P \n" ); document.write( "4x+10 = P Now, because P = P you set these two equations equal and solve for x... \n" ); document.write( "3x+18 = 4x+10 Subtract 3x from both sides. \n" ); document.write( "18 = x+10 Now subtract 10 from both sides. \n" ); document.write( "8 = x or x = 8. \n" ); document.write( "Now you can apply this to the next problem. \n" ); document.write( " \n" ); document.write( " |