Provide an appropriate response.
Find the magnitude of the vector It (total current) in the given figure. Round to the nearest tenth.
A. 6.8 milliamps
B. 3.1 milliamps
C. 9.6 milliamps
D. 46.8 milliamps
Answer: A
Mathematics
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Find the surface area or volume.Use an integral table and a calculator to find to two decimal places the area of the surface generated by revolving the curve 
about the x-axis.
A. 40.67 B. 57.04 C. 69.72 D. 81.33
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Multiply.
× - 
A. - 
B. - 
C. - 
D. - 
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Write the sentence as an equation. Use x to represent "a number."Nine times the sum of a number and -45 is 27.
A. 9[x + (-45)] = 27 B. 9 + x + (-45) = 27 C. 9x + (-45) = 27 D. x + 9(-45) = 27
Mathematics
Rewrite the trigonometric expression as an algebraic expression involving the variable u. Assume that 
and that the value of the "inner" inverse trigonometric expression represents an angle ? such that 
cos (cot-1 u)
A. 
B. 
C. 
D. 
Mathematics