Find the inverse matrix of A.A = 
A. 
B. 
C. 
D. 
Answer: B
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Write the compound statement in words.Let r = "The puppy is trained." p = "The puppy behaves well." q = "His owners are happy."~r ? ~q
A. If the puppy is not trained then his owners are not happy. B. It is not the case that if the puppy is trained then his owners are happy. C. The puppy is not trained and his owners are not happy. D. The puppy is trained or his owners are happy.
Use the Gauss-Jordan method to solve the system of equations. If the system has infinitely many solutions, give the solution with y arbitrary. 7x - 5y = -21-4x + 3y = 12
A. {(-4, 1)} B. {(-3, 1)} C. ? D. {(-3, 0)}
Factor out the greatest common factor, or a negative common factor if the coefficient of the term of greatest degree is negative.
x + 
A. 
B. 3(x + 2)
C. 3
D. 
(x + 2)
Find the product or quotient, as indicated. Leave your answer in trigonometric form.Find the quotient.
A. 2[cos (-180°) + i sin (-180°) ]
B. 
[cos (-180°) + i sin (-180°) ]
C. 
D. 2