The measures of an angle and its supplement differ by 40. what are the measures of the angles? hint: an angle and its supplement have degree measures whose sum is 180. a. ; 70, 30 b. ; 40, 140 c. ; 70, 110 d. ; 60, 120

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

what are the