Final answer:
The mathematical sentences among the given options are B. 7y= 49 and D. b+41 = 93.
Step-by-step explanation:
Out of the given options, the mathematical sentences are B. 7y= 49 and D. b+41 = 93.
A mathematical sentence is a statement that relates mathematical expressions using mathematical symbols such as =, <, >, +, -, *, /, and so on. For example, in option B, the equation 7y= 49 relates the variable y to the value 49 using the equals sign.
On the other hand, options A and C do not include any mathematical symbols or equations, so they are not considered mathematical sentences.
Learn more about Mathematical Sentences