Solve the right triangle shown in the figure. Round lengths to one decimal place and express angles to the nearest tenth of a degree. 
A = 34°, b = 49.4
A. B = 34°, a = 41, c = 33.3
B. B = 56°, a = 33.3, c = 59.6
C. B = 34°, a = 73.2, c = 41
D. B = 56°, a = 73.2, c = 88.3
Answer: B
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Use the method of variation of parameters to solve the differential equation.36D2y - y = sin x
A. y = C1ex/6 + C2e-x/6 - 
sin x
B. y = C1ex/6 + C2e-x/6 - 
sin x + 
cos x
C. y = C1ex/6 + C2e-x/6 + 
sin x
D. y = C1ex/6 + C2e-x/6 - 
cos x
Solve the problem.Consider the following simplified digital photograph that has a 3 × 3 grid with four gray levels numbered from 0 to 3. It shows a letter Y in black on a light gray background.
Let A be the 3 × 3 matrix that represents this figure digitally. Find the matrix which represents the entire picture becoming one shade lighter.
A. 
B. 
C. 
D. 
Simplify the fraction, if possible.
A. undefined B. 6 C. 1 D. 0
The graph of a logarithmic function is shown. Select the function which matches the graph.
A. y = log5x - 2 B. y = log5x C. y = log5(x + 2) D. y = log5(x - 2)