Solve the system of equations by elimination. 2x−y+3z=−12x−y+3z=−1 x+2y−4z=−1x+2y−4z=−1 y−2z=0y−2z=0

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

step-by-step explanation:

if you want to separate 54 into 6 individual tiers then you need to divide if you want to separate 54 into 6 individual tiers then you need to divide 6 and 54.

if you divide 9 by 6 you will get 54.

- hope i .

2 over 5 and 4 over 15

don’t know last one sorry

step-by-step explanation: