Evaluate.
÷ 
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Solve the given differential equation. (The form of yp is given.)D2y - 2Dy + y = x2 + 2x + sin 2x(Let yp = Ax2 + Bx + C + E sin 2x + F cos 2x.)
A. y = c1ex + c2xex + 6x2 + 6x + 10 sin 2x + 
cos 2x
B. y = c1ex + c2xex + 6x2 + 6x + 10 + 
sin 2x + 
cos 2x
C. y = c1ex + 6x2 + 6x + 10 - 
sin 2x + 
cos 2x
D. y = c1ex + c2xex + 6x2 + 6x + 10 - 
cos 2x + 
sin 2x
Mathematics
Provide an appropriate response.In oblique triangle ABC, find the indicated part. Round to the nearest tenth. Side a = 10, side b = 8, and side c = 5; find angle A.
Fill in the blank(s) with the appropriate word(s).
Mathematics
Solve the absolute value inequality. Write your answer in interval notation.|5k + 9| ? 5
A. 
? 
B. 
C. 
D. 
Mathematics
Graph the hyperbola.25x2 - 9y2 = 225
A. 
B. 
C. 
D. 
Mathematics