Answer: A. 4 - d = 8
C. 3 + 2 = 5
E. 1 < 2 
Step-by-step explanation:
- A mathematical sentence makes by combining two expressions with a comparison operator (+,-,×,÷) to create a fact that it may be either true or false.
A. 4 - d = 8
It is a mathematical statement which says that the difference between 4 and d is 8.
B. 4 - v
It is not a mathematical statement because it is neither true nor false. It is just a variable expression.
C. 3 + 2 = 5 
It is a mathematical statement which is true.
D. 6 
It is not a mathematical statement because it is neither true nor false.
E. 1 < 2 
It is not a mathematical statement which is false. It is just a numerical expression.
F. 5g
It is not a mathematical statement because it is neither true nor false.It is just a variable expression.
