Delaney Weber

Mathematics

7 July, 17:23

To get an A in Mr. Polowski's biology class, you need a grade of at least 90%.

Claudia received an A in Mr. Polowski's class last semester.

Conjecture: Claudia got at least 90% in the class.

Use deductive reasoning to verify the conjecture, or provide a counterexample if the conjecture is false.

A.

true; law of detachment

B.

true; law of syllogism

C.

false; not all students who get an A in the class had a grade of at least 90%

D.

false; not all students who get a grade of 90% receive an A in the class