Find the indicated matrix.Let A = [-3 2] and B = [1 0]. Find 2A + 3B.
A. [-5 4]
B. [-6 4]
C. [-3 4]
D. [0 2]
Answer: C
Mathematics
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Explain why the figure is not a polygon.
A. Sides intersect B. Not closed C. Curved side
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Perform the indicated elementary row operations in the stated order.
; 
A. 
B. 
C. 
D. 
Mathematics
Find the exact value of the expression.sin 260° cos 20° - cos 260° sin 20°
A. - 
B. 
C. - 
D. 
Mathematics
Solve the problem.A merchant has coffee worth $20 a pound that she wishes to mix with 60 pounds of coffee worth $90 a pound to get a mixture that can be sold for $60 a pound. How many pounds of the $20 coffee should be used?
A. 52.5 lb B. 22.5 lb C. 45 lb D. 105 lb
Mathematics