The answer below thanks

Step-by-step explanation:

Let the center of the given circle be (h,k)

and its radius be 'r' units

Let (x,y) be a random point on the given circle

Now, distance between the points (x,y) and (h,k) will be equal to its radius, 'r'

Here, is the required equation

answer: .64

step-by-step explanation

set up the formula for standard deviation for this set of numbers, then simplify

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m