Decide whether or not the matrices are inverses of each other.
and 
A. Yes
B. No
Answer: B
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Provide an appropriate response.The average height of a boy in the United States, from birth through 60 months, can be modeled by 
where y is the average height, in inches, of boys who are x months of age. What would be the expected difference in height between a child 36 months of age and a child 16 months of age?
A. 5.8 in. B. 17.4 in. C. 7.8 in. D. 46 in.
Solve the problem.A student is told to work any 6 out of 10 questions on an exam. In how many different ways can he complete the exam? (The correctness of his answers has no bearing.)
A. 210 B. 1,000,000 C. 5040 D. 24
Solve the system using the inverse matrix method.
A. x = 42, y = 62, z = 25; (42, 62, 25) B. x = -2, y = 12, z = -5; (-2, 12, -5) C. x = 7, y = 0, z = 0; (7, 0, 0) D. x = -7, y = 19, z = -5; (-7, 19, -5)
Write the number in standard form.The treasurer's records showed a debt of 
.
A. $1000 B. $1 C. $100 D. $10