Find the expected value of the probability density function to the nearest hundredth.f(x) = 
; [3, 5]
A. 1.31
B. 4.16
C. 4.20
D. 4.78
Answer: B
Mathematics
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Find an equation of the parabola described.Focus at (5, 0); vertex at (0, 0)
A. y = 20x2 B. x = 20y2 C. x2 = 20y D. y2 = 20x
Mathematics
Simplify by combining like terms.-7x + (-5x)
A. -12x B. 12x C. -2x D. 2x
Mathematics
Evaluate the expression for the given replacement values. Write the answer in simplest form.x ÷ y for x = 
, y = 
A. 
B. 
C. 
D. 
Mathematics
Provide an appropriate response.The following proportion is not true. Change any one of the numbers in the proportion to make it true. 
What will be an ideal response?
Mathematics