The endpoints of a diameter of a circle a(-1,1) and b(3,3). what is the length of the radius

If we determine the distance from one point to  the second point, we get the length of the diameter. This is calculated through the equation,

  D= sqrt ((x2 – x1)^2 + (y2 – y1)^2)

Substituting the known values,

  D = sqrt ((-1 – 3)^2 + (1 – 3)^2)

  D = 4.47

The length of the radius is half that of the diameter. Hence, the radius is,

    R = 4.47 /2 = 2.236

r = 2.24

give more details

step-by-step explanation:

company a

step-by-step explanation:

using the linear regression models , it is found that company a   pays about $14 more. but using the same regression (linear) company b pays about $10 more.

so company a pays more than b