Use Stokes' Theorem to calculate the circulation of the field F around the curve C in the indicated direction.F = x2i + xyj + yk; C: the counter-clockwise path around the perimeter of the rectangle in the x-y plane formed from the x-axis, y-axis , x = 3 and y = 9
A. 243
B. 
C. -243
D. - 
Answer: B
Mathematics
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Calculate.89 + (-68)
A. -21 B. 157 C. -157 D. 21
Mathematics
List the intercepts for the graph of the equation.y = x - 2
A. (2, 0), (0, 2) B. (-2, 0), (0, 2) C. (-2, 0), (0, -2) D. (2, 0), (0, -2)
Mathematics
Find the surface area of the figure. Use 3.14 as an approximation for ?. Round your result to the nearest tenth.A right circular cylinder with r = 4.7 in., h = 6.8 in.
A. 471.7 in.2 B. 339.4 in.2 C. 169.7 in.2 D. 239.1 in.2
Mathematics
Solve the problem.In Country X, the average hourly wage in dollars from 1960 to 2010 can be modeled by f(x) = 
Use f to estimate the average hourly wages in 1965, 1985, and 2005.
A. $0.77, $2.27, $6.67 B. $0.77, $3.05, $6.67 C. $3.43, $0.39, $6.67
Mathematics