Find the value of x, with work shown if possible

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

Two line segments are shown in the figure below. suppose that the length of the line along the x-axis is 6, and the length of the hypotenuse of the triangle is 10. what is the equation of the hypotenuse line (shown in red, below)?

In the equation sqrt(n+5)-sqrt(11-10)=1. what is the value of n