Plz hurry which equations are equivalent to the given equation?   49 = -7k   choose all answers that are correct a. 49 divided by (-7) = - 7k divided by (-7)   b. 49 x (-7) = -7k divided by (-7)   c. 49 x (- 1/7) = -7k times (-7)   d. 49 x (-1/7) = -7k times (-1/7)

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step-by-step explanation:

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