Find the principal square root.
A. 100
B. 10
C. -10
D. 50
Answer: B
Mathematics
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Find the area enclosed by the given curves.y = 
x2, y = -x2 + 6
A. 4 B. 32 C. 8 D. 16
Mathematics
Solve the problem.The distance d in miles that can be seen on the surface of the ocean is given by 
where h is the height in feet above the surface. How high (to the nearest foot) would a platform have to be to see a distance of 
A. 272 B. 408 C. 121 D. 110
Mathematics
Find the length of the third side of the right triangle. Assume that c represents the length of the hypotenuse. Give an exact answer and, if appropriate, an approximation to three decimal places.b = 2, c = 4
A. a = 
; a ? 2.449
B. a = 
; a ? 2.828
C. a = 
; a ? 3.464
D. a = 2
Mathematics
Identify the vertex of the parabola.f(x) = 
x2 + 
x
A. 
B. 
C. 
D. 
Mathematics