Name the kind of rotational symmetry shown in the figure.
A. fourfold
B. sixfold
C. onefold
D. eightfold
Answer: D
Mathematics
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Find the area of the figure.
A. 39
B. 286
C. 13 
D. 13 
Mathematics
Find the standard equation of the parabola that satisfies the given conditions. Vertex: (1, -3); directrix: x = -3
A. (x + 3)2 = 16(y - 1) B. (y + 3)2 = 16(x - 1) C. (x - 1)2 = -16(x + 3) D. (y + 3)2 = -16(x - 1)
Mathematics
The dimensions of two matrices are given. Find the dimensions of the product AB and the product BA. If either is not defined, say so.A is 2 × 1; B is 1 × 1.
A. AB is 2 × 2; BA is 1 × 1. B. AB is 1 × 2; BA is 1 × 1. C. AB is not defined; BA is 1 × 2. D. AB is 2 × 1; BA is not defined.
Mathematics
Divide.
A. 
B. 
C. 
D. 
E. 
Mathematics