What's the Answer to this algebra expression?

2k +6 =k

In pqr the obtuse angle is 105 and the shorter sides measure 4 and 7 units rounded to the nearest tenth what is the area of triangle pqr

James was playing a game with his friends. he won 35 points. then he lost 15, lost 40 and won 55. how did he come out

Can you me find the missing length. i attached an image.