Identify the equation without applying a rotation of axes.4x2 + 6xy + 3y2 + 2x - 4y - 1 = 0
A. parabola
B. ellipse
C. hyperbola
D. not a conic
Answer: B
Mathematics
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Find the products AB and BA to determine whether B is the multiplicative inverse of A.A = 
,B = 
A. B = A-1 B. B ? A-1
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Solve the system algebraically.y = 5x - 27y = 2x - 15
A. (4, -7) B. no solution C. (-4, 7) D. (-4, -7)
Mathematics
Solve the problem.The formula A = 159e0.023t models the population of a particular city, in thousands, t years after 2011. When will the population of the city reach 183 thousand?
A. 2019 B. 2018 C. 2017 D. 2016
Mathematics
Find the required part of the geometric sequence.Find the first term of a geometric sequence with seventh term 
and common ratio of 
A. 
B. 
C. 
D. 1
Mathematics