document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=319387>Question 319387</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help with: In a triangle ABC, angle B is 4 times angle A and angle C is 7(degrees) less than 5 times angle A.<BR>\n" );
document.write( "What are the sizes of the angles? </SPAN>\n" );
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document.write( "In a triangle ABC, angle B is 4 times angle A and angle C is 7(degrees) less than 5 times angle A.<BR>\n" );
document.write( "What are the sizes of the angles?<BR>\n" );
document.write( "Equations:<BR>\n" );
document.write( "B = 4A<BR>\n" );
document.write( "C = 5A-7<BR>\n" );
document.write( "A+B+C = 180<BR>\n" );
document.write( "-------------<BR>\n" );
document.write( "Substitute for B and for C, and solve for \"A\":<BR>\n" );
document.write( "A + 4A + 5A-7 = 180<BR>\n" );
document.write( "10A = 187<BR>\n" );
document.write( "A = 18.7 degrees<BR>\n" );
document.write( "----<BR>\n" );
document.write( "B = 4A = 4*18.7 = 74.8 degrees<BR>\n" );
document.write( "-----------------<BR>\n" );
document.write( "C = 5*18.7 -7 = 86.5 degrees<BR>\n" );
document.write( "=================================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "========== </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );