You then have to subtract 125 from both sides so we can isolate our variable which will give us 15x = 120 . Divide 15 from both sides : 15x/15 = 120/15 which will give us x = 8.
C^2=a^2+b^2 6^2=5^2+b^2 36=25+b^2 b^2=36-25 b^2=11 b= √11 b=3.3166 If you need to round it to the tenth place, b~3.3 to hundreds place, b~3.32 Good luck
