Find the center and radius of the circle.(x + 5)2 + (y - 9)2 = 36
A. (-5, 9); 36
B. (-5, 9); 6
C. (5, -9); 36
D. (5, -9); 6
Answer: B
Mathematics
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Solve the system.x2 + 3xy + y2 = 4x2 - 3xy - y2 = 4
A. {(2, 0), (-2, 0)} B. {(2, -6), (-2, 6)} C. {(0, 2), (0, -2), (2, -6), (-2, 6)} D. {(2, 0), (-2, 0), (2, -6), (-2, 6)}
Mathematics
Express the terminating decimal as a quotient of integers. If possible, reduce to lowest terms.0.7856
A. 
B. 
C. 
D. 
Mathematics
Write the equation for the plane.The plane through the points P(-1, 7, -59) , Q(2, 4, -23) and 
A. 5x - 7y - z = -5 B. 5x - 7y - z = 5 C. 5x + 7y +z = -5 D. 5x + 7y + z = 5
Mathematics
Calculate the arc length of the indicated portion of the curve r(t).r(t) = (1 + 2t2)i + (2t2 - 1)j + (6 - t2)k, 1 ? t ? 3
A. 90 B. 24 C. 30 D. 72
Mathematics