Find the standard deviation. Round to one more place than the data.15, 11, 20, 15, 19, 13, 11, 9, 17, 23

A. 1.7
B. 4.0
C. 4.5
D. 4.1

Answer: C

Mathematics

Identify a, b, c, with a > 0, for the quadratic equation.4x2 = 10 - x

A. a = 4, b = -1, c = 10 B. a = 4, b = 1, c = -10 C. a = 4, b = 0, c = -10 D. Not quadratic

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Mathematics

Find the curvature of the space curve.r(t) = (7 t sin t + 7 cos t)i + 7j + (7t cos t - 7 sin t)k

A. ? =
B. ? = 7t
C. ? =
D. ? = -

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Mathematics

Find f(x) and g(x) such that h(x) = (f ? g)(x). Answers may vary.h(x) = + 8

A. f(x) = x + 8, g(x) =
B. f(x) = x, g(x) = + 8
C. f(x) = , g(x) = + 8
D. f(x) = , g(x) = 8

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Mathematics

Find the domain and range.y = 8x2

A. D = (-?, ?); R = [0, ?) B. D = (-?, ?); R = [8, ?) C. D = [0, ?); R = [-8, ?) D. D = (-?, ?); R = (-?, ?)

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Mathematics