Solve.x2 - 81 = 80x
A. -9, -9
B. -1, 81
C. -9, 9
D. 1, -81
Answer: B
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Find the potential function f for the field F.F = (y - z)i + (x + 2y - z)j - (x + y)k
A. f(x, y, z) = xy + y2 - xz - yz + C B. f(x, y, z) = x(y + y2) - xz - yz + C C. f(x, y, z) = xy + y2 - x - y + C D. f(x, y, z) = x + y2 - xz - yz + C
Solve.A windmill is constructed having blades 18.7 feet long. The length of the blades will be the radius of the circle which the windmill will sweep. What is the circumference of the circle which the windmill will sweep? (Use 3.14 for ?.)
A. 117.436 ft B. 113.696 ft C. 56.848 ft D. 58.718 ft
Use U = universal set = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9}, A = {1, 2, 3, 5, 8}, B = {2, 3, 5, 7}, and C = {1, 4, 9} to find the set.
A. {0, 1, 4, 6, 7, 8, 9} B. {1, 4, 6, 8, 9} C. {0, 1, 4, 6, 9} D. {0, 1, 4, 6, 8, 9}
Find the indicated root or state that the expression is not a real number.
A. - 
B. 2
C. not a real number
D. -2