Solve.The sum of a number and 8 times its reciprocal is -6. Find the number.

A. 2 or 4
B. -2
C. -5 or 1
D. -2 or -4


Answer: D

Mathematics

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Describe the largest set S on which it is correct to say that f is continuous.f(x, y) = tan (x + y) 

A. Entire plane
B. {(x, y): x + y ?  , where n is an integer}
C. {(x, y): (x, y) ? (0, 0)}
D. {(x, y): (x, y) ?  }

Mathematics

Find the flux of the vector field F across the surface S in the indicated direction.F = 5xi + 5yj + z3k; S is portion of the cylinder x2 + y2 = 4 between z = 0 and z = 4; direction is outward

A. -160? B. 80 C. 160? D. 160

Mathematics

Use the shell method to find the volume of the solid generated by revolving the shaded region about the indicated axis.About the x-axisy = 4x = 4

A. ?
B. ?
C. ?
D. 64?

Mathematics

Identify the terms of the polynomial.5x3 + 6x2 - 3x + 6

A. 5, x3, 6, x2, -3, x, 6 B. 5x3, 6x2, 3x, 6 C. 5x3, 6x2, -3x, 6 D. 5x3 + 6x2, -3x + 6

Mathematics