Reverse the order of integration and then evaluate the integral.
A. 10 sin 9
B. 10 cos 9
C. 9 sin 10
D. 9 cos 10
Answer: C
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Use the Root Test to determine if the series converges or diverges.
A. Converges B. Diverges
Polar coordinates of a point are given. Use a graphing utility to find the rectangular coordinates of the point to two decimal places.
A. (2.46, -0.43) B. (-0.43, -2.46) C. (-2.46, -0.43) D. (-0.43, 2.46)
Find the standard deviation of the probability density function to the nearest hundredth.f(x) = 
- 
; [2, 6]
A. 0.94 B. 0.95 C. 0.93 D. 0.92
Solve the problem.A computer manufacturer has three outlet stores that sell its four computer systems. The following table shows the numbers of systems sold by the three stores in July.
The prices of the systems are: $1200 for System 1, $1500 for System 2, $1600 for System 3, and $2200 for System 4. Write the information from the table as a 4 x 3 matrix B. Write a row matrix A for which the entries represent the prices for the systems. If 
find c12. What does this entry of C represent?
A. c12 = 156,000. c12 represents the sales of System 2 at all stores in July. B. c12 = 188,000. c12 represents the total sales at Store 2 in July. C. c12 = 166,000. c12 represents the total sales at Store 1 in July. D. c12 = 176,000. c12 represents the total sales at Store 3 in July.