Find the perimeter and area of the figure.
9 cm
4 cm
The perimeter is
centimeters.
The area is
square centimeters.

P: 26cm, A:36cm

Step-by-step explanation:

Remember, the perimeter of a rectangle is all of the sides added up. We already know the width is 4cm and the length is 9cm, and since the opposite sides are the same (the lenghts are the same size, the width are always the same size), we know that we have 2 4cm sides and 2 9cm sides.

Add: 4 + 4 + 9 + 9 and that is your perimeter.

The area is the length and width multiplied together:

Multiply: 9 x 4 and that is your area.

step-by-step explanation:

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.