Use De Morgan's laws to negate the statement without using parentheses.r ? s ? ~t
A. ~r ? ~s ? t
B. ~r ? ~s ? t
C. r ? ~s ? t
D. ~r ? ~s ? t
Answer: B
Mathematics
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A. -2 B. -3 C. 2 D. 3
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?
?
A. 
B. 
C. 
D. 
E. 
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Multiply or divide and simplify your answer.1
? 7
A. 9
B. 13
C. 10
D. 7
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Use the sum and difference identities to evaluate exactly.sin 
A. - 
B. 
C. 
D. - 
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