Abag contains 2 red marbles, 2 green marbles, and 4 blue marbles. if we choose a marble, then another marble without putting the first one back in the bag, what is the probability that the first marble will be red and the second will be green?

A bag contains 2+2+4=8 marbles in total.

We have to find the probability of the following events:

1. We have to choose a red marble from the bag that contains 8 marbles in total, 2 of them are red

2. We have to choose a green marble from the bag that contains 7 marbles in total, 2 of them are green.

The probability of the first event to happens is:

The probability of the second event to happen is:

The probability of both events to happen is:

30 miles

step-by-step explanation:

we know that 60 seconds equals 1 minute and 60 minutes 1 hour

44 ft       60 sec     60 min     158400   ft

  *   *   =

1 sec       1 min       1 hour         hour

we know that there are 5280 ft per mile

158400   ft       1 mile         30 miles

  *   =

1   hour               5280 ft     1 hour

so in 1 hour   it can travel 30 miles