Either the dimensions of two matrices or the matrices themselves are given. Find the dimensions of the product AB and the product BA. If either is not defined, say so.A = 
; B = 
.
A. AB is 3 × 3; BA is 3 × 3.
B. AB is 1 × 1; BA is 1 × 1.
C. AB is not defined; BA is not defined
D. AB is 1 × 1; BA is 3 × 3.
Answer: C
Mathematics
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Write the equation for the plane.The plane through the point P(-2, -6, -6) and normal to n = 7i + 2j + 3k.
A. -2x - 6y - 6z = -44 B. 7x + 2y + 3z = -44 C. -7x - 2y - 3z = -44 D. 2x + 6y + 6z = -44
Mathematics
Identify the specified numbers.The irrational numbers in the following list:4, 
, -14, 0, 
, 
, 0.44
A. 
, 0.44
B. 
, 
, 0.44
C. 
, 
D. 
Mathematics
Perform the indicated operation. Simplify, if possible.
- 
+ 
A. None of these
B. 
C. 
D. 
Mathematics
Solve the given trigonometric equation analytically (using identities when necessary for exact values when possible) for values of x for 0 ? x < 2?.2 sin2 x = sin x
A. 
, 
B. 0, ?, 
, 
C. 
, 
, 
, 
D. 
, 
Mathematics