Solve the system for x and y using Cramer's rule. Assume a and b are nonzero constants.a2x + b2y = b2ax + by = a
A. 
B. 
C. 
D. 
Answer: D
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Using Green's Theorem, compute the counterclockwise circulation of F around the closed curve C.F = xyi + xj; C is the triangle with vertices at (0, 0), (10, 0), and (0, 6)
A. 60 B. 90 C. 0 D. - 70
Solve the problem.A wheel with a 40-inch radius is marked at two points on the rim. The distance between the marks along the wheel is found to be 12 inches. What is the angle (to the nearest tenth of a degree) between the radii to the two marks?
A. 17.2° B. 13.2° C. 15.2° D. 19.2°
Use the point-slope form to find the equation of a line with the given properties. Write the equation in slope-intercept form.Slope = -4, through (4, 6)
A. y = -4x B. y = -4x - 22 C. y - 6 = -4x - 4 D. y = -4x + 22
Find the center, foci, and vertices of the ellipse.36(x + 3)2 + 16(y - 1)2 = 576
A. center at (-2, 1)
foci at (-2, 1 - 2
), (-2, 1 + 2
)
vertices at (-2, 7), (-2, -5)
B. center at (3, 1)
foci at (3, 1 - 2
), (3, 1 + 2
)
vertices at (3, 7), (3, -5)
C. center at (1, -3)
foci at (1, -3 - 2
), (1, -3 + 2
)
vertices at (1, 7), (1, -5)
D. center at (-3, 1)
foci at (-3, 1 - 2
), (-3, 1 + 2
)
vertices at (-3, 7), (-3, -5)