Solve the equation.
= 
A. {4}
B. {-2}
C. {-22}
D. {22}
Answer: D
Mathematics
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A. 8x5
B. x5
C. 8x10
D. 64x5
Mathematics
Provide an appropriate response.When is the square of the sum the sum of a square; i.e., when is (A + B)2 = A2 + B2 ?
What will be an ideal response?
Mathematics
Solve the problem.Express 
as ? + ?, where cos ? and cos ? are known exactly.
A. 
+ 
B. 
+ 
C. 2? + 3?
D. 
+ 
Mathematics
Provide an appropriate response.Suppose that A and B are two matrices such that A + B, A - B, and AB all exist. What can you conclude about the dimensions of A and B?
A. A and B have the same dimension, but are not necessarily square matrices. B. A and B are square matrices of the same dimension. C. There are no dimensions of A and B that would make this possible. D. A is a row matrix and B is a column matrix.
Mathematics