There would be 2 raised to c elements in the power set. Elements of the
power set are formed by making a binary decision on each element of the input
set: include or do not include. Since there are two choices for each element of
the input set, and there are c elements in the input set, there are 2^c possible
arrangements of these input elements.
Rectangle's perimeter formula is p=2(length+width)
2(9x+8x)=68
17x=34
x=2
length is 9(2)=18 feet
width is 8(2)=16feet
The answer is 8/32 because 8 x 4 = 32
I hope that 2-1 means 21.
DE + EF = DF
4x + 10 + 21 = 9x - 15
4x + 31 = 9x - 15
31 = 9x - 4x - 15
31 = 5x - 15
46 = 5x
x = 9 1/5 = 9.2
You want 9x - 15
9*9.2 - 15
82.8 - 15
67.8 <<<<< answer.
If I have given the wrong meaning to 2-1 (which could mean 1) leave another note and I will correct my work.
That would be the commutative property
