Solve the problem.Place the numbers 8, 9 10, 11, and 12 in the circles to make the sum across equal to the sum vertically. 
Which numbers can be placed in the center circle?
A. 8, 10, and 12
B. 10, 11, and 12
C. 8, 9, and 10
D. 9, 10, and 11
Answer: A
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Write an equivalent double integral with the order of integration reversed.
A. 
B. 
C. 
D. 
Solve.A school has just purchased new computer equipment for 
The graph shows the depreciation of the equipment over 5 years. The point (0, 19,000) represents the purchase price and the point (5, 0) represents when the equipment will be replaced. Write a linear equation in slope-intercept form that relates the value of the equipment, y, to years after purchase x . Use the equation to predict the value of the equipment after 2 years.
A. y = 19,000x + 5; value after 2 years is $11,400.00 B. y = - 3800x + 19,000; value after 2 years is $11,400.00; C. y = 3800x - 19,000; value after 2 years is $11,400.00 D. y = - 19,000x + 19,000; value after 2 years is $-19,000.00
Use the given information to find the exact value of the trigonometric function.sin ? = 
, tan ? > 0
Find cos 
.
A. 
B. 
C. 
D. 
Solve the problem.Suppose the following matrix represents the input-output matrix of a primitive economy. How much of each commodity should be produced to produce 5 bushels of yams and 1 pigs?
A.
X = 
B.
X = 
C.
X = 
D.
X = 