Identify the equation without applying a rotation of axes.x2 - 4xy - 4y2 - 3x + 2y + 3 = 0
A. ellipse
B. hyperbola
C. parabola
D. not a conic
Answer: B
Mathematics
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Use graphs to find the set.(-9, 0) ? [-2, 3]
A. (-9, 3] B. (0, 3] C. [-2, 0) D. (-9, -2]
Mathematics
Find (f ? g)(x) and (g ? f)(x).f(x) = 5x2; g(x) = x + 3
A. (f ? g)(x) = 5x2 + 30x + 3 (g ? f)(x) = 5x2 + 45 B. (f ? g)(x) = 5x2 + 45 (g ? f)(x) = 5x2 + 30x + 3 C. (f ? g)(x) = 5x2 + 30x + 45 (g ? f)(x) = 5x2 + 3 D. (f ? g)(x) = 5x2 + 3 (g ? f)(x) = 5x2 + 30x + 49
Mathematics
Multiply the polynomials and simplify by combining like terms.(5y + 11)(3y2 - 2y - 9)
A. 15y3 + 43y2 + 67y + 99 B. 15y3 + 23y2 - 67y - 99 C. 15y3 - 10y2 - 45y + 11 D. 48y2 - 32y - 144
Mathematics
Solve.An electrical circuit has a resistance of 3 ohms and a current of -7 amps. Find the voltage.
A. -10 V B. 21 V C. -21 V D. -22 V
Mathematics