Find the exact value of the expression in degrees without using a calculator or table.? = sin-1 
A. 45°
B. 60°
C. 120°
D. 135°
Answer: B
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Determine if the argument is valid or invalid. Give a reason to justify answer.If it is cold, then you need a coat.You do not need a coat. ? It is not cold.
A. Valid by the law of contraposition B. Invalid by fallacy of the inverse C. Invalid by fallacy of the converse D. Valid by the law of syllogism
Evaluate the expression.(-7)2
A. -14 B. -49 C. 14 D. 49
Find the vertex, focus, and directrix of the parabola. Graph the equation.x2 - 12x = 12y - 96
A. vertex: (6, 5)
focus: (6, 8)
directrix: y = 2
B. vertex: (6, 5)
focus: (9, 5)
directrix: x = 3
C. vertex: (6, 5)
focus: (3, 5)
directrix: x = 9
D. vertex: (6, 5)
focus: (6, 2)
directrix: y = 8
Determine if the following system is consistent, inconsistent, or dependent. If the system is consistent, find the solution of the system. 
A. Consistent; (4, 8) B. Inconsistent C. Consistent; (6, 8) D. Dependent