Use the graph to find a ? > 0 such that for all x, 0 < 
< ? ? 
< ?.
A. 0.1
B. 0.2
C. 0.4
D. 3
Answer: B
Mathematics
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Solve the given third- or fourth-order differential equation.D3y + 2 D2y - 63 Dy = 0
A. y = c1e9x + c2e-7x B. y = c1 + c2e-9x + c3e7x C. y = c1 + c2e9x + c3e-7x D. y = c1e-9x + c2e7x
Mathematics
Simplify. Be sure to rationalize all denominators. Assume that all variables represent positive real numbers.
A. 
B. 2
C. 2
D. 
Mathematics
Solve.
+ 
= -1
A. 5
B. - 
C. 0
D. No solution
Mathematics
The triangles are similar. Find the missing length x and the missing angles A, B, C.
A. x = 57; A = 9; B = 35; C = 136 B. x = 19; A = 35; B = 9; C = 136 C. x = 57; A = 35; B = 9; C = 136 D. x = 19; A = 136; B = 9; C = 35
Mathematics