Find an equation of variation in which y varies inversely as x and the following is true.y = 8, when x = 11

A. y =
B. y =
C. y =
D. y = 88x

Answer: B

Mathematics

Find ?f.f(x, y, z) = x4y9 +

A. F = i + 9x⁴y⁸j - k
B. F = (4x³ + 6x⁵)i + 9y⁸j - k
C. F = 4x³y⁹i + 9x⁴y⁸j - k
D. F = (4x³ + 6x⁵)i + 9y⁸j + k

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Mathematics

Divide. Write with positive exponents.

A. 2x3 - 4x2 - 8
B. -2x3 + 7x2 + 8 -
C. 2x3 - 7x2 - 8
D. 2x3 - 7x2 - 8 +

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Mathematics

Factor completely. If the polynomial is prime, state so.x9 - 8y6

A. (x3 + 2y2)(x6 + 2x3y2 + 4y4) B. (x3 - 2y2)(x6 + 2x2y3 + 4y4) C. (x3 - 2y2)(x6 + 2x3y2 + 4y4) D. (x3 - 2y2)(x3 - 2x3y2 - 4y2)

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Mathematics

Find the conjugate of the complex number. Then multiply the complex number by its conjugate.-5 + 7i

A. -5 + 7i; 74 B. -5 - 7i; 74 C. -12; 74 D. 2; 74

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Mathematics