Determine whether matrix B is the inverse of matrix A by finding the product AB.A = 
, B = 
A. B = A-1
B. B ? A-1
Answer: B
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The function s = f(t) gives the position of a body moving on a coordinate line, with s in meters and t in seconds.s = 3t2 + 2t + 3, 0 ? t ? 2Find the body's displacement and average velocity for the given time interval.
A. 10 m, 14 m/sec B. 22 m, 11 m/sec C. 16 m, 8 m/sec D. 16 m, 16 m/sec
Find the mean, median, mode, and midrange for the given data. Round to the nearest tenth if necessary.
A. mean = 23.2, median = 22.4, mode = 22.4, midrange = 24.15 B. mean = 23.2, median = 22.4, mode = 22.4, midrange = 6.7 C. mean = 23.2, median = 24.8, mode = 22.4, midrange = 24.15 D. mean = 23.7, median = 22.4, mode = 27.5, midrange = 6.7
Provide an appropriate response.Choose the expression that is equivalent to the following: (3x + 4y)(3y + 7x)
A. (3x + 4y)(7x + 3y) B. (3x + 4y)(7y + 3x) C. (3x + 7x)(4y + 3y) D. 10x + 7y
Find the least common denominator.
and 
A. p3(p + 6)(p - 6)2 B. p2(p + 6)(p - 6) C. p3(p - 6) D. p3(p + 6)(p - 6)