Find the indicated matrix.Let A = 
and B = 
. Find 
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Indicate whether the equation represents direct variation, inverse variation, or neither. If it is a variation equation, identify the constant of proportionality.xy = 12
A. inverse variation; k = 12
B. neither
C. inverse variation; k = 
D. direct variation; k = 12
Mathematics
Factor completely.y2 - 4y - 21
A. (y + 3)(y - 7) B. (y - 21)(y + 1) C. (y - 3)(y + 7) D. (y - 3)(y - 7)
Mathematics
Find the first year's depreciation using the MACRS method of depreciation and the MACRS depreciation rates table. Round to the nearest dollar.MACRS Depreciation Rates 
Cost:$33,900Recovery period:5 years
A. $6780 B. $4844 C. $10,848 D. $11,299
Mathematics
Multiply.
? 
? 0 ? 71
A. 0
B. 6461
C. 
D. 21
Mathematics