Final answer:
The mathematical sentences among the options are A. 7r=14, C. x = 0, and D. 4g=8.
Step-by-step explanation:
The mathematical sentences among the options are A. 7r=14, C. x = 0, and D. 4g=8.
A mathematical sentence is a statement in mathematics that expresses a mathematical fact or relationship and can be true or false. In each of these options, we have an equation that relates variables and constants. For example, in option A, the equation 7r=14 represents the relationship that when we multiply 7 by a number r, the result is 14. Options C and D follow the same pattern, relating variables and constants. Therefore, these three options are mathematical sentences.
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