Apackage of floor tiles contains 24 one foot tiles. find how many packages should be bought to cover a square ballroom floor whose side measures 64 feet.

To cover a square ballroom 171 packages of tiles are required.

Step-by-step explanation:

Given:

1 package = 24 tiles.

Size of tile = 1 foot

Tiles are in square shape.

Hence Area of Tile =

Also Given:

Side of the ballroom = 64 feet.

Ballroom floor is in square shape.

Hence we will find the Area of ballroom.

Area of ballroom =

Are of ballroom =

Now we will find the Number of tiles required to cover ballroom.

Number of tiles required is equal to Area of ballroom divided by Area of Tile.

Framing in equation form we get;

Number of tiles required =

Now Given that

1 package contains  = 24 tiles

Number of packages required  = 4096 tiles

By using Unitary method we get;

Number of packages required  =

Hence To cover a square ballroom 171 packages of tiles are required.

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.