Your school is painting the shop room. it measures 30 feet by 100 feet and has a ceiling that is 12 feet tall. paint costs $14.75 and a gallon covers 400 feet. what is the wall area of the room? 1,560 square feet 3,120 square feet 2,920 square feet 2,860 square feet

The wall area of the room is

Step-by-step explanation:

I add a graph of the situation in order to explain the question.

In the graph we can see the drawing of the shop room.

I put the measures in the graph.

In order to calculate the wall area of the room, we are going to calculate the area of wall 1, wall 2, wall 3 and wall 4 and then sum between them.

Areas :

If we sum all the areas :

We find that the wall area of the room is

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.