Find the following. Assume that letters can represent any real number.
A. Not a real number
B. 4x
C. 16
D. 4
Answer: D
Mathematics
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Solve the problem.The gross national product for the United States was 
. Round this amount to the nearest ten-billion.
A. $53,400,000,000,000 B. $53,350,000,000,000 C. $53,351,000,000,000 D. $50,000,000,000,000
Mathematics
Simplify the radical expression. If appropriate, include absolute values.
A. 7x
B. 7
C. -7
D. 49x
Mathematics
Solve the system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent.
A. x = -1, y = 5, z = 2; (-1, 5, 2) B. x = 1, y = 5, z = 3; (1, 5, 3) C. inconsistent D. x = 1, y = 3, z = 5; (1, 3, 5)
Mathematics
Use the fundamental identities to find the value of the trigonometric function.Find cot ? if csc ? = 
and ? is in quadrant I.
A. 3
B. 
C. 
D. 
Mathematics