A bag contains eight red marbles and four blue marbles. You randomly pick a marble and then pick a second marble without returning the marbles to the bag. The first marble is red and the second marble is blue.

show work please thanks!

14/33

Step-by-step explanation:

eight red marbles and four blue marbles = 12 total

P(red) = red/total = 8/12 = 2/3

No replacement

seven red marbles and four blue marbles =11 total

P(blue) = blue/total = 7/11

P(red, no replacement, blue) = 2/3*7/11 = 14/33

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:

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