The size of two matrices is given. Find the size of the product AB and the product BA, if the products exist.A is 2 × 1, B is 1 × 1.
A. AB is 2 × 1, BA is undefined.
B. AB is 1 × 2, BA is 1 × 1.
C. AB is 2 × 2, BA is 1 × 1.
D. AB is undefined, BA is 1 × 2.
Answer: A
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Find the coordinates for the point that is four units to the left of the y-axis and is six units up from the x-axis.
A. (-4, -6) B. (4, -6) C. (-4, 6) D. (6, 6) E. (4, 6)
Provide an appropriate answer.Suppose that w = x2 + y2 + 12z + t and x + 3z + t = -7. Assuming that the independent variables are x, y, and z, find 
.
A. 
= 2x + 4
B. 
= 2x - 1
C. 
= 2x - 4
D. 
= 2x + 1
In the related-linked diversification strategy, strategic business units (SBUs)
A. share resources, activities, and core competencies within and between SBUs. B. share resources, activities, and core competencies only with the SBU. C. share resources, activities, and core competencies only between SBUs. D. do not share resources, activities, and core competencies among product divisions even within the SBU.
Add or subtract as indicated. Simplify, if necessary.
+ 
A. 
B. 
C. 
D. 1