If y varies inversely as x, write a general formula to describe the variation.y = 18 when x =

A. y =
B. y =
C. y =
D. y = 54x

Answer: A

Mathematics

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Find the missing dimension of the figure shown. Round to the nearest tenth unless otherwise directed in parentheses.The hexagon is regular.

A. 71 ft B. 123 ft C. 61 ft D. 112 ft

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Mathematics

Find the center, transverse axis, vertices, foci, and the equations of the asymptotes of the hyperbola.(x + 1)2 - 9(y - 2)2 = 9

A. center: (-1, 2)
transverse axis: x = -1
vertices: (-1, -1) and (-1, 5),
foci: (-1, 2 - ) and (-1, 2 + ),
asymptotes: y + 2 = - 3(x - 1) and y + 2 = 3(x - 1)
B. center: (2, -1)
transverse axis: y = 2
vertices: (-1, -1) and (5, -1)
foci: (2 - , -1) and (2 + , -1)
asymptotes: y + 1 = - (x - 2) and y + 1 = (x - 2)
C. center: (-1, 2)
transverse axis: y = 2
vertices: (-4, 2) and (2, 2)
foci: (-1 - , 2) and (-1 + , 2)
asymptotes: y - 2 = - (x + 1) and y - 2 = (x + 1)
D. center: (-1, 2)
transverse axis: y = 2
vertices: (-2, 2) and (0, 2)
foci: (-1 - , 2) and (-1 + , 2)
asymptotes: y - 2 = - 3(x + 1) and y - 2 = 3(x + 1)