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