Find the expected value for the random variable x having this probability function.
A. 15.6
B. 15.9
C. 20
D. 19.5
Answer: C
Mathematics
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Solve the problem by integration.The general expression for the slope of a curve is 
Find the equation of the curve if it passes through (1, 0).
A. y = ln 
B. y = ln 
C. y = ln 
D. y = ln 
Mathematics
Find an equation for the ellipse described.Center (0, 0); major axis vertical with length 14; length of minor axis is 8
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Mathematics
Divide.5728 ÷ 8
A. 716 B. 718 R7 C. 716 R1 D. 718
Mathematics
Estimate the sum as indicated. Then answer the question.Estimate the following sum by first rounding to the nearest ten. Does the estimate give you reason to doubt the stated sum?
A. Estimate: 12,710 ; no B. Estimate: 12,950 ; no C. Estimate: 12,950 ; yes D. Estimate: 12,710 ; yes
Mathematics