document.write( "Question 426882: The second angle in a triangle is 5 times as large as the first, the third angle is 2/3 as large than the first \n" ); document.write( "
Algebra.Com's Answer #296917 by www.mathmartian.com(5)![]() ![]() ![]() You can put this solution on YOUR website! The angles in a triangle add up to 180 degrees. \n" ); document.write( "Let's name the first angle x. \n" ); document.write( "The second angle is 5 times as large as the first, or 5x. \n" ); document.write( "The third angle is 2/3 as large as the first, or 2/3x. \n" ); document.write( "The sum of all three angles should be 180, so let's write an equation and solve for x. \n" ); document.write( "x+5x+2/3x=180 \n" ); document.write( "6 2/3x=180 \n" ); document.write( "20/3x=180 convert 6 2/3 to an improper fraction \n" ); document.write( "*3/20 *3/20 \n" ); document.write( "x=27 \n" ); document.write( "So the first angle is 27 degrees \n" ); document.write( "5x=5*27=135 \n" ); document.write( "The second angle is 135 degrees \n" ); document.write( "2/3x=2/3*27=18 \n" ); document.write( "The third angle is 18 degrees \n" ); document.write( "Let's check our answer. All three angles should add up to 180 degrees. \n" ); document.write( "27+135+18=180 \n" ); document.write( "Yes, our answer checks out:) \n" ); document.write( " |