Solve the problem.The product of a number and 4 less than the number is 21. Find the number.
A. -3 or 7
B. -8 or 2
C. -7 or 3
D. -2 or 8
Answer: A
Mathematics
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Let p represent a true statement, while q and r represent false statements. Find the truth value of the compound statement.[(~p ? ~q) ? ~q]
A. True B. False
Mathematics
Solve the equation on the interval [0, 2?).cos 2x = 
A. 
B. 
, 
C. 
, 
, 
, 
D. 
Mathematics
Write in decimal notation.
A. 0.66117 B. 0.066117 C. 6.6117 D. 66.117
Mathematics
Find the value of the expression.ln e-3
A. - 
B. e ln -3
C. 1
D. -3
Mathematics