The sizes of two matrices A and B are given. Find the sizes of the product AB and the product BA, whenever these products exist.A is 3 × 3, and B is 3 × 3.
A. 3 × 6; 3 × 6
B. 6 × 3; 6 × 3
C. 3 × 3; 3 × 3
D. 1 × 1; 1 × 1
Answer: C
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Solve the problem.Each of ten tickets is marked with a different number from 1 to 10 and put in a box. If you draw a ticket from the box, what is the probability that you will draw 2, 7, or 6?
A. 
B. 
C. 
D. 
Find matrices A, X, and B such that the linear system is equivalent to the matrix equation AX = B.
A. A= 
, X = 
, B = 
B. A = 
, X = 
, B = 
C. A = 
, X = 
, B = 
D. A = 
, X = 
, B = 
If the area of a triangular shaped lawn is 100 ft2 and sod costs $0.32 per square foot, how much will the project cost?
What will be an ideal response?
Solve the triangle. Round lengths to the nearest tenth and angle measures to the nearest degree.
A. A = 42°, B = 87°, C = 51° B. A = 51°, B = 42°, C = 87° C. A = 51°, B = 87°, C = 42° D. A = 42°, B = 51°, C = 87°