Solve the problem.Amy has 3 blue, 4 red, and 5 green books to arrange on a shelf. In how many ways can the books be arranged if books of the same color are identical and must be grouped together?
A. 6
B. 150
C. 103,680
D. 17,280
Answer: A
Mathematics
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Solve the problem.Find the area bounded by xy = 11, x = 2, x = 5, and y = 0.
A. 11 ln 
B. ln 
C. 11 ln 
D. 
ln 
Mathematics
Solve the differential equation subject to the initial conditions.
+ xy = 2x; y = -6 when x = 0
A. y = 2e-x2/2 - 8 B. y = 2ex2/2 - 8 C. y = -8e-x2/2 + 2 D. y = -8ex2/2 + 2
Mathematics
Find the equation of the parabola satisfying the given conditions. The vertex is at the origin.Focus (0, -3)
A. y2 = -3x
B. y = - 
x2
C. y2 = -12x
D. x2 = -12y
Mathematics
Evaluate. Assume that all variables represent positive numbers. 
A. 2s
B. s
C. -s
D. 
Mathematics