Solve the system by graphing.
A. (4, 3)
B. (4, -3)
C. (1, 3)
D. (-4, -3)
Answer: B
Mathematics
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Solve the given third- or fourth-order differential equation.D4y - 2 D3y - 9 D2y + 18 Dy = 0
A. y = c1 + c2e3x + c3e-3x+ c4e2x B. y = c1 + c2e3x + c3e-3x + c4e-2x C. y = c1e3x + c2e-3x+ c3e-2x D. y = c1e3x + c2e-3x + c3e-2x
Mathematics
Divide and reduce to lowest terms.
÷ 
A. 
B. 
C. 
D. 
Mathematics
Find a rectangular equation for the plane curve defined by the parametric equations.x = 
, y = 2t + 5; 0 < t < ?
A. y = 2x2 - 5; for x in 0 < x < ?
B. y = 2
+ 5; for x in 0 < x < ?
C. y = 2x2 + 5; for x in 0 < x < ?
D. y = 2
- 5; for x in 0 < x < ?
Mathematics
Solve the problem.Biologists banded four out of every twenty wild ducks. What percent were not banded?
A. 16% B. 20% C. 80% D. 4%
Mathematics