Given matrices A = 
, B = 
, and C = 
, decide if the statement is true or false.(AB)C = A(BC)
A. True
B. False
Answer: A
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Solve the problem by guessing and adjusting.Mitra created a mosaic design using square 4-by-4 cm white tiles and rectangular 
centimeter black tiles. She used twice as many white tiles as black tiles. The finished pattern was 2704 square centimeters in area. How many rectangular tiles did she use?
A. 52 B. 20 C. 104 D. 212
Which of the following is a theme from the research literature on student motivation?
a. Motivations are learned b. Motivation hinges on students' interpretation of their successes and failures. c. Intrinsic motivation is better than engagement for a reward. d. Inequities are influenced by how different groups are taught to view mathematics. e. All of the above
Find the area of the rectangle or square.Length = 9 yd, width = 7 yd
A. 16 yd2 B. 32 yd2 C. 63 yd2 D. 126 yd2
Find the average of the set of numbers.7
and 23
A. 13
B. 27
C. 15
D. 31