Simplify the algebraic expression by combining like terms.5.9k - 1.9 - 3.1k + 2 + 2.2k

A. 11.2k + 0.1
B. 5k - 0.1
C. 5k + 3.9
D. 5k + 0.1


Answer: D

Mathematics

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Solve the problem.When an alternating current passes through a series RLC circuit, the voltage and current are out of phase by angle ?. Here ? = tan-1[(XL - XC)/R], where XL and XC are the reactances of the inductor and capacitor, respectively, and R is the resistance. Find d?/dR for constant XL and XC.

A.
B.
C.
D.

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Provide an appropriate response.Determine if the expression (-3)-10 is positive or negative.

A. Negative B. Positive

Mathematics

Find the optimal row or column strategy of the matrix game.Let M be the matrix game having payoff matrix  .Find the optimal row strategy.

A.  = 
B.  = 
C.  = 
D.  = 

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Solve.Amy can clean the house in 7 hours. When she works together with Tom, the job takes 4 hours. How long would it take Tom, working by himself, to clean the house?

A. 10hr
B. 3 hr
C. 9 hr
D. 9hr

Mathematics