Which choice correctly identifies the center and the radius of the circle expressed by the equation x² + y2 + 10x - 2y - 10 = 0?
1) C: (5, -1)r=6
2) C: (5, -1) r= square root 10
3) C: (-5, 1) r= 6
4) C: (-5, 1) r= square root 10

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

triangle and cube

step-by-step explanation:

this may not be at all, but i use the same website you're using for school, and if i'm stuck doing one of these i try to look for it on the section.

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