E ( X )
The probability density function of X is f (x) = 4/x5 over [1, x= ?). Compute the quantity.
4 / 3
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Solve the given differential equation.D2y + 6 Dy + 9y = 0
A. y = c1e-3x + c2 B. y = (c1 + c2x)e3x C. y = (c1 + c2x)e-3x D. y = ce-3x
Write the ratio in simplest form.A molecule of ethanol is composed of two atoms of carbon, six atoms of hydrogen, and one atom of oxygen. Write the ratio of oxygen atoms to total atoms in a molecule of ethanol.
A. 
B. 9
C. 1
D. 
Determine the coordinates of the points shown. Tell in which quadrant the point lies. Assume the coordinates are integers. 
A. (-6, -4); quadrant III B. (-6, -8); quadrant III C. (-6, -8); quadrant IV D. (-6, -4); quadrant IV
Find an equivalent expression with the given denominator.
= 
A. 
B. 
C. 
D. 