Solve the system of equations by using elimination by addition.

A. (4, -1)
B. Inconsistent
C. (-4, -2)
D. (5, 4)


Answer: A

Mathematics

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Factor completely. If the polynomial cannot be factored, write "prime."5x2 + 5xy - 60y2

A. 5(x - 3y)(x + 4y) B. (x - 3y)(5x + 20y) C. (5x + 15y)(x - 4y) D. 5(x + 3y)(x - 4y)

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Simplify. Leave answer in exponential form with positive exponents only. Assume that all variables represent nonzero quantities.

A. 3x
B.
C. x-3
D. x3

Mathematics

Find the determinant.

A. -30.866 B. 25.686 C. 88.094 D. 87.59

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Find the limit.

A. Does not exist
B. 1
C.
D. 0

Mathematics