Which equation shows that 5 is a factor of 45? Choose 1

A: 45 = 5x9
B: 45 = 225 ÷ 5
C: 45 = 5 + 40
D: 45 = 50 - 5

The answer to that question is A.

Step-by-step explanation.

You can just divide 5 into 45.

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