Solve the problem.The equation P = IV cos ? gives the power (in watts) absorbed in an ac circuit. Find ? when
and 
Round results to an appropriate number of significant digits.
A. 31°
B. 37°
C. 34°
D. 56°
Answer: C
Mathematics
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Find the value.If F(x, y) = ex sinh y, find Fx(-2, 0) and Fy(-2, 0).
A. Fx(-2, 0) = e-2, Fy(-2, 0) = 0 B. Fx(-2, 0) = e-2, Fy(-2, 0) = e-2 C. Fx(-2, 0) = 0, Fy(-2, 0) = 0 D. Fx(-2, 0) = 0, Fy(-2, 0) = e-2
Mathematics
Indicate whether the equation represents direct variation, inverse variation, or neither. If it is a variation equation, identify the constant of proportionality.xy = 12
A. inverse variation; k = 12
B. neither
C. inverse variation; k = 
D. direct variation; k = 12
Mathematics
The following figure has perimeter, circumference, or area as indicated. Find the value of x. Use 3.14 as an approximation for ?.C = 56.52
A. 9 B. 12 C. 15 D. 6
Mathematics
Use Simpson's Rule with n = 4 steps to estimate the integral.
A. 25
B. 100
C. 50
D. 
Mathematics