Perform the indicated operation. Write the result in the form a + bi.(-8 + 9i) - 5
A. 13 - 9i
B. -3 + 9i
C. -3 - 9i
D. -13 + 9i
Answer: D
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Sketch the surface z = f(x,y).f(x, y) = 1 - x - 2y
A. 
B. 
C. 
D. 
Use Euler's method to calculate the first three approximations to the given initial value problem for the specified increment size. Round your results to four decimal places.y' = y - ex - 2, y(2) = -1, h = 0.5
A. y1 = -6.6945, y2 = -18.2830, y3 = -36.2673 B. y1 = -6.1945, y2 = -16.3830, y3 = -35.6173 C. y1 = -7.1945, y2 = -20.1830, y3 = -36.9173 D. y1 = -5.6945, y2 = -14.4830, y3 = -34.9673
Solve.Find the center, foci, and vertices of the ellipse 2x2 + 3y2 - 24x + 18y + 93 = 0
A. center: (6, -3); foci: (-3, 7), (-3, 5); vertices: (-3, 7.7), (-3, 4.3) B. center: (-6, 3); foci: (-5, 3), (-7, 3); vertices: (-7.7, 3), (-4.3, 3) C. center: (6, -3); foci: (7, -3), (5, -3); vertices: (7.7, -3), (4.3, -3) D. center: (-6, 3); foci: (7, -3), (5, -3); vertices: (7.7, -3), (4.3, -3)
Find the LCD for the given fractions.
and 
A. 336 B. 1344 C. 224 D. 672