6. –9 – 6(w + 5) (1 point) –15w + 5 –15w + 30 –6w – 39 –6w + 21

Step-by-step explanation:

We are given expression as

We are given to simplify it

So, firstly we will distribute -6

and then we can combine like terms

we can multiply it

we can also write as

So, answer is

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