document.write( "Question 553314: In a hall, there are 180 seats. The number of seats in each row is 8 more than the number of rows. Find the number of rows \n" ); document.write( "
Algebra.Com's Answer #360792 by mananth(16946)![]() ![]() You can put this solution on YOUR website! rows be x \n" ); document.write( "seats in each row = x+8\r \n" ); document.write( "\n" ); document.write( "seats = 180\r \n" ); document.write( "\n" ); document.write( "x(x+8)=180 \n" ); document.write( "x^2+8x=180 \n" ); document.write( "x^2+8x-180=0\r \n" ); document.write( "\n" ); document.write( "x^2+18x-10x-180=0 \n" ); document.write( "x(x+18)-10(x+18)=0 \n" ); document.write( "(x+18)(x-10)=0 \n" ); document.write( "x= 10 number of rows \n" ); document.write( " \n" ); document.write( " |