Write the partial fraction decomposition of the rational expression.
A. 
+ 
+ 
B. 
+ 
+ 
C. 
+ 
+ 
D. 
+ 
+ 
Answer: B
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Solve.A cold piston measures 8.665 cm in diameter. What heated, it expands an additional 0.024 cm. What is the diameter of the heated piston?
Fill in the blank(s) with the appropriate word(s).
Solve the system.
A. x = 1, y = -1, z = 1 B. x = -1, y = 1, z = 1 C. x = 0, y = 1, z = 0 D. x = 0, y = 0, z = 1
Use a graphing utility to find the equation of the line of best fit. Round to two decimal places, if necessary.
A. y = 1.79x + 0.43 B. y = 0.43x + 1.79 C. y = -1.86x + 1.79 D. y = 1.79x - 1.86
Joe and Bryan have been comparing their investment portfolios for several years. Joe claims that his portfolio of only stocks has a better record than Bryan's portfolio that is 20% stocks and 80% bonds. Let x be a random variable representing the annual percent return for Joe's portfolio and let y be a random variable representing the annual return on Bryan's portfolio. Use this information to calculate the coefficient of variation for Bryan's portfolio. Round your answer to two decimal places.
a. 75.8%
b. 131.92%
c. 65.31%
d. 125.15%
e. 153.11%