To factor a number out of an expression means to divide each term of the expression by that number.
So, if you want to factor 
from the expression 
, you'll write it as
So, in your case, when you divide both terms by -5 you get
So, the expression becomes
It's (10-7)=3 wide and (17-7)=10 high
So the perimeter is
P=2(3+10)=26 units
Answer:
Linear Negative Association is the answer I believe.
Answer:
A mathematical proof is an inferential argument for a mathematical statement, showing that the stated assumptions logically guarantee the conclusion.The argument may use other previously established statements, such as theorems; but every proof can, in principle, be constructed using only certain basic or original assumptions known as axioms, along with the accepted rules of inference.
Its got to be in there.
