document.write( "Question 408151: In parallelogram DATE, angle D = 8x-20 and angle A = 2x+30. Find x.\r
\n" );
document.write( "\n" );
document.write( "I was thinking that both angles had to be equal, so i set the equation equal and i came out with a decimal point. Thank you for your help. \n" );
document.write( "
Algebra.Com's Answer #287612 by katealdridge(100) You can put this solution on YOUR website! They're not equal, they are supplementary. So you have to add them and set it equal to 180. \n" ); document.write( "8x-20+2x+30=180 combine like terms \n" ); document.write( "10x+10=180 subtract 10 from both sides \n" ); document.write( "10x=170 divide both sides by 10 \n" ); document.write( "x=17 \n" ); document.write( " |