Simplify the radical expression. Indicate if the expression is not a real number.
A. 
B. Not a real number
C. - 
D. - 10
Answer: B
Mathematics
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Find the exact value of the expression.sec 150°
A. 
B. - 
C. - 
D. 
Mathematics
Determine the direction in which the parabola opens, and the vertex.y2 - 4y - x - 1 = 0
A. Opens to the left; (5, -2) B. Opens downward; (2, 5) C. Opens downward; (-2, 5) D. Opens to the right; (-5, 2)
Mathematics
Identify whether the slope is positive, negative, zero, or undefined.
A. Negative B. Zero C. Positive D. Undefined
Mathematics
Solve the problem.Find a unit vector normal to the plane containing u = -i + j + 4k and v = 2i - 3j + k.
What will be an ideal response?
Mathematics