Find the value of the variable.

x = 13, y = 13

Step-by-step explanation:

The triangle is 45- 45- 90, that is a right isosceles triangle, with the 2 legs being congruent , that is

x = 13

Using Pythagoras' identity in the right triangle

y² = 13² + 13² = 169 + 169 = 338 ( take the square root of both sides )

y = = = 13

answer: 25.4 units

step-by-step explanation: radius = 12.7 units

diameter = twice the radius

diameter = 12.7 x 2

= 25.4

none of the above.

for one of the equations to be used in the process, there has to be a term in the equation since squared is .

since there is only a term in the first equation, we cannot derive a from completing the square.

solving with completing the square