Perform the row operations on the matrix and write the resulting matrix. Replace R2 by R1 + R2
A. 
B. 
C. 
D. 
Answer: C
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Solve the problem.A solid of constant density is bounded below by the plane 
above by the cone 
and on the sides by the cylinder 
Find the center of mass.
A. (0, 0, 
)
B. (0, 0, 
)
C. (0, 0, 
)
D. (0, 0, 
)
Solve the problem. Assume all data are accurate to two significant digits unless greater accuracy is given.A company sold 9.5 million items in a two-year period. Sales increased by 700,000 the second year. How many were sold the second year?
A. 5,000,000 B. 5,100,000 C. 7,650,000 D. 4,400,000
Solve the problem.In a two-card hand, what is the probability of holding two kings?
A. 
B. 
C. 
D. 
Solve the problem.The following graph shows a weight and height chart. The weight w is listed in pounds and the height h in inches. The shaded area is a recommended region. 
Weight (pounds)What does this chart indicate about an individual who weighs 140 pounds and is 73 inches tall?
A. This individual weighs less than recommended for his or her height. B. There is not enough information given. C. This individual's weight falls within the recommended region for his or her height. D. This individual weighs more than recommended for his or her height.