Use a graphing utility to find or approximate solutions to the equation. If necessary, round your answers to three decimal places.x2 + 6x - 72 = 0
A. -12, 1
B. -12, 6
C. 12, -6
D. 12, 6
Answer: B
Mathematics
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Use the method of undetermined coefficients to solve the differential equation.y'' - 16y = 5sin x, y = 0, y' = 0 when x = 0
A. y = - 
e4x + 
e-4x - 
cos x
B. y = 
e4x - 
e-4x - 
sin x
C. y = - 
e4x + 
e-4x - 
sin x
D. y = 
e4x - 
e-4x - 
cos x
Mathematics
Find the value of the trigonometric function.sec (230.05°)
A. -0.6421 B. -1.304 C. 1.194 D. -1.557
Mathematics
Find the sum of the infinite geometric series, if it exists.4 + 1 + 
+ 
+ . . .
A. 1
B. 5
C. 
D. Does not exist
Mathematics
Perform the indicated operations.
÷ 
- 10 ? 
2
A. - 
B. - 
C. - 
D. - 
Mathematics