Solve the system of equations.  x -y + 3z = -13x+ z = 0  x + 5y +z = 5

A. (1, 0, 0)
B. (0, 0, 1)
C. (0, 1, -1)
D. (0, 1, 0)

Answer: D

Mathematics

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Find the rational number halfway between the two given rational numbers., 

A.
B.
C.
D.

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Represent the vector in the form v = ai + bj whose magnitude and direction angle are given. = 10; ? = 120°

A. v = 5i - 5j
B. v = -5i + 5j
C. v = -5i + 5j
D. v = 5i - 5j

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Write the algebraic expression without parentheses.-(-3 + 4y)

A. -3 + 4y B. 12y C. 3 - 4y D. 3 + 4y

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Provide an appropriate response.Derive the identity:cos (? + ?) + cos (? - ?) = 2 cos ? cos ?

What will be an ideal response?

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