Find the decimal approximation for the radical. Round the answer to three decimal places.
A. 1.426
B. 1.398
C. 1.000
D. 1.411
Answer: D
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Factor completely.50x4 - 98
A. 2(25x4 - 49) B. 2(5x2 - 7)2 C. (10x2 - 14)(5x2 + 7) D. 2(5x2 - 7)(5x2 + 7)
Use the laws of exponents to simplify each expression using positive exponents only. Assume all variables represent nonzero real numbers.(15b)0
A. b B. 15 C. 0 D. 1
Solve the problem.The power dissipated in an electric circuit is given by the expression 
where R is the resistance of the circuit and I is the current through the circuit. For a sinusoidal alternating current, the current might be represented by the relation 
where A is the amplitude, f is the frequency, and t is time. Write an expression for P involving the sine function, and use a fundamental identity to write P in terms of the cosine function.
A. P = RA sin2(2?ft) ; P = RA - RA cos2(2?ft) B. P = RA2 sin2(2?ft) ; P = RA2 - RA2 cos2(2?ft) C. P = RA2 sin2(2?ft) ; P = - RA2 cos2(2?ft) D. P = RA sin2(2?ft) ; P = RA - cos2(2?ft)
Determine the viewing window used. 
A. 
B. 
C. 
D. 