Integrate the function f over the given region.f(x, y) = xy over the rectangle 2 ? x ? 5, 4 ? y ? 6
A. 210
B. 70
C. 105
D. 140
Answer: C
Mathematics
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Construct a Venn diagram illustrating the following sets.A hematology text gives the following information on percentages of the different types of blood in the western hemisphere.
A. 
B. 
C. 
D. 
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Solve.Find the original price when the discount rate is 50% and the amount of discount is $262.50.
A. $525.00 B. $5.25 C. $131.25 D. $13,125.00
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Solve the problem.Suppose that the x-intercepts of the graph of y = f(x) are 8 and 5. What are the x-intercepts of 
A. 8 and 1 B. 12 and 9 C. 32 and 20 D. 4 and 1
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Solve the quadratic equation by factoring.4x2 - 5x - 9 = 0
A. x = 
, 1
B. x = 
, -1
C. x = 
, 0
D. x = 
, -1
Mathematics