Answer:
792
Step-by-step explanation:
It's a combination question. The order is of no consequence. Also the fact that there are juniors and seniors is not important either.
So the answer is
12C5
12!
====
(12 - 5)! * 5!
12 * 11 * 10 * 9 * 8
==============
5 * 4 * 3 * 2 * 1
792
The formula for perimeter is length + length + width + width
You know that all the sides of a square are equal to each other. That means that all the values in the perimeter formula should be the same. Therefore you can divide 72 by 4 (perimeter divided by the number of sides)
72 / 4 = 18
^^^Each side is 18 in
The formula for are is...
A = length x width
so...
18 * 18 = 324
324 in^2
Hope this helped!
~Just a girl in love with Shawn Mendes
Answer:
![c=20](https://tex.z-dn.net/?f=c%3D20)
Step-by-step explanation:
The diagonals of a rectangle always bisect each other. Therefore, we can set
:
![c=4c-60,\\-3c=-60,\\c=\fbox{20}](https://tex.z-dn.net/?f=c%3D4c-60%2C%5C%5C-3c%3D-60%2C%5C%5Cc%3D%5Cfbox%7B20%7D)