Answer:
2nd one
Step-by-step explanation:
Answer:

Step-by-step explanation:
The area of a rectangle formula is length times width.
The length of this rectangle is
, and the width of this rectangle is 
Thus, the area of the rectangle is
. This can be expanded using FOIL.
First 
Outer 
Inner 
Last 
The two x terms combine, making 8x, and the answer is 
Assuming the movie screen is rectangular, the answer would be 8 meters tall. Because the perimeter is 2 times width plus 2 times height, you can subtract 36 (18 times 2) from 54. This leaves you with 18, which is 2 times height. Divide both by two and you get 9
For example,
7.2, 4.3, 13.9
Answer:
3
4
5
9
2
Step-by-step explanation: