document.write( "Question 132345: I need some help on this problem please: find out the length of sides a & b on the following triangle. A=x, b=3x and c = 19. I think I should use the pythagorean theorem. I squared 19 to get 361, but I don't know how to figure the rest. Any advice would be great. \n" ); document.write( "
Algebra.Com's Answer #96704 by checkley71(8403)![]() ![]() ![]() You can put this solution on YOUR website! IF YOU HAVE A RIGHT TRIANGLE AND THE 19 SIDE IS THE HYPOTENUSE THEN YES USE THE PYTHAGOREN THERUM: \n" ); document.write( "X^2+(3X)^2=19^2 \n" ); document.write( "X^2+9X^2=361 \n" ); document.write( "10X^2=361 \n" ); document.write( "X^2=361/10 \n" ); document.write( "X=SQRT36.1 \n" ); document.write( "X=6.008 ANSWER FIOR THE SHORTER SIDE. \n" ); document.write( "X=3*6008 \n" ); document.write( "X=18.025 ANSWER FOR THE LONGER SIDE. \n" ); document.write( "PROOF \n" ); document.write( "6.008^2+18.025^2=19^2 \n" ); document.write( "36+325=361 \n" ); document.write( "361=361 \n" ); document.write( " |