SD(X )
The probability density function of X is f (x) = 81 / x4 over [3, ?) . Compute the following quantity.
5.099020
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Graph the polar equation.r = 1 - 3 sin ?
A. 
B. 
C. 
D. 
Solve the problem.A domed ceiling is a parabolic surface. For the best lighting on the floor, a light source is to be placed at the focus of the surface. If 9 m down from the top of the dome the ceiling is 19 m wide, find the best location for the light source. Round to one decimal place if necessary.
A. 5 m down from the top B. 2.5 m down from the top C. 10 m down from the top D. 7.5 m down from the top
Provide an appropriate response.The range and standard deviation of the data set below are 35 and 12.47 respectively. 5, 24, 25, 26, 40If the 26 is replaced with 39, how will this affect the range? How will this affect the standard deviation. Use your answers to explain why the standard deviation is preferable to the range as a measure of variation.
What will be an ideal response?
Find all solutions of the equation. Leave answers in trigonometric form.x3 + 8 = 0
A. {2 cis 180°, 2 cis 60°, 2 cis 300°} B. {2 cis 180°, 2 cis 240°, 2 cis 240°} C. {2 cis 180°, 2 cis 120°, 2 cis 300°} D. {2 cis 180°, 2 cis 120°, 2 cis 240°}