Find the weighted mean of the numbers in the table. Round to the nearest tenth.Find the weighted mean salary for the employees. Round to the nearest thousand dollars. 
A. $39,000
B. $40,000
C. $41,000
D. $45,000
Answer: B
Mathematics
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Evaluate the integral in terms of natural logarithms.
A. ln 2
B. 
ln 
C. ln 
D. 
ln 
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Find the length and direction (when defined) of u × v.u = 4i + 2j + 8k, v = -i - 2j - 2k
A. 180; 
i + 
j + 
k
B. 180; 
i + 
k
C. 6
; 
i + 
k
D. 6
; 
i - 
k
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Test the vector field F to determine if it is conservative.F = x5y5z5i + x5y5z5j + z5k
A. Not conservative B. Conservative
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Identify the number represented on the abacus.
A. 90,928 B. 91,928 C. 51,528 D. 50,528
Mathematics