Simplify.-4x + 8x

A. -32x
B. -12x
C. 4x
D. 4 + x


Answer: C

Mathematics

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Replace the Cartesian equation with an equivalent polar equation.x2 + y2 - 4x = 0

A. r sin2? = 4 cos ? B. r = 4 sin ? C. r cos2? = 4 sin ? D. r = 4 cos ?

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Solve.Frank can type a report in 2 hours and James takes 7 hours. How long will it take the two of them typing together?

A.  hr
B.  hr
C.  hr
D. 7 hr

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Use the given functions to find the requested function.f(x) = 7x + 8, g(x) = 5x2Find (g/f)(x).

A.
B. 35x2 + 40x
C. 5x2 + 7x + 8
D.

Mathematics

Use the Gauss-Jordan method to solve the system of equations.5x + 2y + z = -112x - 3y -  z = 177x -  y  = 12

A. (0, -6, 1) B. (-2, 0, -1) C. (1, -5, 0) D. No solution

Mathematics