Geometry will give brainliest answer. the equation of a circle is x^2 + y^2 - 12y + 20 = 0 what are the coordinates of the center and the length of the radius of the circle

This looks like:

(x - h)2 + (y - k)2 = r2

You should be able to pull the correct center coordinates and radius from there.

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