You walk 3 miles from your house to the store. at the store you meet up with a friend and walk with her 1 mile back towards your house. how far are you from your house now?

2 miles from your house

Step-by-step explanation:

you walked 3 miles to the store so you are now 3 miles away.

you meet a friend and walk 1 mile in the direction of your house.

now there is 2 miles left.

3 - 1 = 2

if he has no friends he cant give them out to his friends

step-by-step explanation:

no friends = cant give anything out

a) one student is chosen from classroom a, then a student is chosen from classroom b.  

step-by-step explanation:

independent events are ones in which the probability of one event does not affect the probability of the second event.

one student is chosen from classroom a; this does not affect the chances of choosing a student from classroom b.   this makes these independent events.

when one card is chosen from a standard deck and then set aside before a second card is chosen, the probability of the second card being chosen changes.   this makes them dependent events.

when one student is chosen from classroom a and then a second student is chosen from classroom a, the probability of choosing the second student changes.   this makes them dependent events.

when a letter is chosen from the alphabet and then a second letter is chosen, the probability of choosing the second letter changes.   this makes them dependent events.