Find the expression as the sine or cosine of an angle.

What will be an ideal response?

Mathematics

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Find fx, fy, and fz.f(x, y, z) = ln (xy)z

A. f_x = - ; f_y = - ; f_z = ln (xy)
B. f_x = ; f_y = ; f_z = z ln (xy)^{z - 1}
C. f_x = ; f_y = ; f_z = ln (xy)
D. f_x = z ln ; f_y = z ln ; f_z = ln (xy)

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Mathematics

Multiply.(7x2 - 9y)2

A. 49x4 + 81y2 B. 49x4 + 126x2y + 81y2 C. 49x4 - 81y2 D. 49x4 - 126x2y + 81y2

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Mathematics

Add and simplify. Write the answer as a mixed number as needed.7 + 17

A. 25
B. 7
C. 23
D. 24

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Mathematics

Factor the polynomial by removing any common monomial factor.27x4 - 9x3 + 12x2

A. 3x(9x3 - 3x2 + 4x) B. 3(9x4 - 3x3 + 4x2) C. 3x2(9x2 - 3x + 4) D. x2(27x2 - 9x + 12)

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Mathematics