Find the vertex, axis of symmetry, and y-intercept of the parabola that has the given focus and directrix.Focus (5, -7), directrix y = -1
A. (5, -4), y = 5, (0, -4)
B. (-4, 5), y = -4, (0, 5)
C. (5, -8), x = -8, 
D. (5, -4), x = 5, 
Answer: D
Mathematics
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Multiply.(3.1x - 8y)(2.6x + 5y)
A. 8.06x2 - 5.3xy - 40y2 B. 8.06x - 5.3xy - 40y C. 8.06x2 - 40y2 D. 8.06x2 - 36.3xy - 40y2
Mathematics
Provide an appropriate response.Simplify the power of i52
A. i B. -1 C. 1 D. -i
Mathematics
Provide an appropriate response.Simplify: 7(x - y) - 4(y - x)
Fill in the blank(s) with the appropriate word(s).
Mathematics
Use the substitution method or the elimination method to solve the system. If the system has infinitely many solutions, express the ordered pair in terms of x or y. x + 6y = -32x + 12y = -6
A. (-3, 0)
B. (0, 0)
C. 
or (-6y - 3, y)
D. no solution
Mathematics