Write with radicals. Assume that all variables represent positive real numbers.81/2
A. 
B. 2.83
C. 4
D. 
Answer: A
Mathematics
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Write standard form and identify a, b, and c.2x2 = 5x - 4
A. 2x2 + 5x - 4 = 0; a = 2, b = 5, c = -4 B. 2x2 - 5x + 4 = 0; a = 2, b = -5, c = 4 C. 2x2 + 5x + 4 = 0; a = 2, b = -5, c = -4 D. 2x2 - 5x = -4; a = 2, b = -5, c = -4
Mathematics
Solve graphically. Round solutions to three decimal places, where appropriate.5x2 - 20x + 11 = 0
A. 1.158, 3.842 B. -5.175, -2.492 C. -3.675, -0.992 D. 0.658, 3.342
Mathematics
Find the standard form of the equation of the ellipse satisfying the given conditions.Foci: (-3, 0), (3, 0); vertices: (-4, 0), (4, 0)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Mathematics
Find the second-order partial derivative.Find fyy when f(x,y) = 8x3y - 7y2 + 2x.
A. -14 B. -28 C. 48xy D. 24x2
Mathematics