Find the standard deviation for the given data. Round your final answer to one more decimal place than that used for the observations.The normal monthly precipitation (in inches) for August is listed for 12 different U.S. cities.
A. 12.03 in.
B. 1.05 in.
C. 1.00 in.
D. 1.09 in.
Answer: B
Mathematics
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Perform the indicated operation.18 + (-12) + (-18)
A. 48 B. -12 C. 24 D. 12
Mathematics
Find y in terms of x.
= 12(4x - 2)-3, curve passes through (0, 1)
A. y = - 6(4x - 2)-2 + 1.375
B. y = (4x - 2)-2 - 2.25
C. y = - 
(4x - 2)-2 + 1.375
D. y = - 
(4x - 2)-4 + 1.047
Mathematics
Solve the problem. Round to the nearest tenth.The roof of a building is in the shape of the hyperbola 9y2 - x2 = 11, where x and y are in meters. Refer to the figure and determine the height, h, of the outside walls.
a = b = 3 m
A. 1.5 m B. 4.5 m C. 2.2 m D. 20 m
Mathematics
Perform the indicated operation. Write the answer in simplest form.
? 6
A. 
B. 
C. 
D. 
Mathematics