5. Find the center and radius of the circle with the given equation.
(x + 4)^2 + (y - 1)^2 = 25
A) Center(-4,1); r = 5
B) Center(4, -1); r = 5
C) Center(-4,1); r = 25
D) Center(4, -1); r = 25

A

Step-by-step explanation:

The equation of a circle in standard form is

(x - h)² + (y - k)² = r²

where (h, k) are the coordinates of the centre and r is the radius

(x + 4)² + (y - 1)² = 25 ← is in standard form

with centre = (- 4, 1 ) and r = = 5 → A

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