X^2 + 6x = - 9 user:
which of the following equations shows the correct form of the equation x^2 + 10x + 25 = 16 if the zero product property is to be used?
(x + 5)(x + 5) = 16
(x + 1)(x + 9) = 0
(x - 1)(x - 9) = 0 user: 3x2 = 147

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