Complete the steps to find the value of x​

The hypotenuse of a 45 -45 -90 triangle measure 7 square root 2 units

In the diagram below what is the approximate length of the minor arc ab

Which of these equations, when solved, gives a different value of x than the other three? a9.1 = -0.2x + 10 b10 = 9.1 + 0.2x c10 – 0.2x = 9.1 d9.1 – 10 = 0.2x