Does the system have one solution, no solution, or an infinite number of solutions?x + 2y = 0y = - 
x
A. One
B. No Solution
C. Infinite number
Answer: C
Mathematics
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Identify the domain of f. Write your answer in set-builder notation.f(x) = 
A. {x|x ? -8} B. {x|x ? -5} C. {x|x ? -8, x ? 5} D. {x|x ? 5}
Mathematics
Express the sum or difference as a product.cos 10x - cos 4x
A. -2 sin 7x sin 3x B. -2 cos 7x sin 3x C. 2 cos 7x cos 3x D. 2 cos 3x
Mathematics
Factor. Check by multiplying.3x - 15y
A. 3(x - 15y) B. 3(x - 5y) C. 5(3x - 3y) D. 3(x - y)
Mathematics
The major axis of an ellipse is horizontal, and the vertices of the major axis are 
and 
. The minor axis is vertical, and the vertices of the minor axis are 
and 
. Write the equation of the major axis.
A. 
B. 
C. 
D. 
E. None of these
Mathematics