What is the number of unordered partitions of S = {a, b, c, d, e, f} of type (3, 3)?
A. 20
B. 45
C. 10
D. 90
E. none of these
Answer: C
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Solve the initial value problem.
= x cos (7x2), y(0) = 6
A. y = 
sin(7x2) + 6
B. y = 
sin (u)
C. y = 
sin(7x2) + 6
D. y = sin (7x2) + 6
Solve the problem.What is the range of the cosine function?
A. all real numbers greater than or equal to 0 B. all real numbers C. all real numbers greater than or equal to 1 or less than or equal to -1 D. all real numbers from -1 to 1, inclusive
Solve the problem.In a cake recipe, the ratio of milk to flour is 
. If 4 cups of milk are used, how many cups of flour are used?
A. 
cups
B. 
cups
C. 
cups
D. 
cups
Determine whether the equation has no solution, one solution, or infinitely many solutions.2x + 9(x + 1) + 2 = 11 - 3x
A. Infinitely many solutions B. One solution C. No solutions