Factor the four-term polynomial by grouping.7x - 63 + xy - 9y
A. (x - 9y)(7 + y)
B. (y - 9)(7x + y)
C. (y - 9)(x + 7)
D. (x - 9)(7 + y)
Answer: D
Mathematics
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Find the mass of the solid S bounded by the paraboloid z = 6x² + 6y² and the plane z = 5 if S has constant density 3. Select the correct answer.
a. 16.25 b. 15.07 c. 24.91 d. 13.92 e. 19.63
Mathematics
Determine if the given sequence could be an arithmetic sequence.1, -3, 9, -27, 81, . . .
A. Yes B. No
Mathematics
Find the sum.-17 + 7
A. -24 B. -10 C. 10 D. 24
Mathematics
Find the coordinates of the vertex and the direction of opening of each parabola.y = -(x + 5)2 + 6
A. (-5, 6) opens downward B. (6, -5) opens upward C. (6, -25) opens upward D. (-6, 5) opens downward
Mathematics