Solve by elimination.2x + 4y = -5-4x - 8y = -10
A. Infinite number of solutions
B. (-10, -20)
C. No solution
D. (10, 20)
Answer: C
Mathematics
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Sketch D and g(D) from the description of D and change of variables 
x = 3u, y = 
v where D is the rectangle 0 ? u ? 2, 1 ? v ? 4 
?
A.
 ? |  |
B.
 ? |  |
C. None of these.
D.
 ? |  |
Mathematics
Use the fundamental identities to find the value of the trigonometric function.Find tan ?, given that sin ? = 
and ? is in quadrant II.
A. - 
B. - 
C. 
D. - 
Mathematics
Write the indicated term of the binomial expansion.(3x - 3y)11, 6th term
A. -81,841,914x6y5 B. 27,280,638x6y6 C. -27,280,638x5y6 D. 27,280,638x5y6
Mathematics
Graph the parabola.y = 2x2 + 2x - 4
A. 
B. 
C. 
D. 
Mathematics