Write the expression as a trigonometric function of a positive number.cot 
A. 1 - cot 
B. cot 
C. -cot 
D. tan 
Answer: C
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Find the vertex, focus, and directrix of the parabola. Graph the equation.x2 - 12x = 8y - 68
A. vertex: (6, 4)
focus: (6, 6)
directrix: y = 2
B. vertex: (6, 4)
focus: (8, 4)
directrix: x = 4
C. vertex: (6, 4)
focus: (6, 2)
directrix: y = 6
D. vertex: (6, 4)
focus: (4, 4)
directrix: x = 8
Determine whether the given monomials are like terms. 3xy and -2Xy
A. Yes B. No
Use a graphing utility to solve the system of equations. Round answers to two decimal places.
A. x = 4.56, y = -22.55, z = -6.06; (4.56, -22.55, -6.06) B. x = -22.55, y = -6.06, z = 4.56; (-22.55, -6.06, 4.56) C. x = 4.56, y = -6.06, z = -22.55; (4.56, -6.06, -22.55) D. x =-22.55, y = 4.56, z = -6.06; (-22.55, 4.56, -6.06)
Solve the equation. Express radicals in simplest form.(4 - 10x)2 = 3
A. 
, 
B. 
, 
C. 
, 
D. 
, 