Determine whether the two matrices are inverses of each other by computing their product.
and 
A. No
B. Yes
Answer: B
Mathematics
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Change the Cartesian integral to an equivalent polar integral, and then evaluate.
A. ?(9 ln 10 - 9) B. ?(10 ln 10 + 9) C. ?(10 ln 10 - 9) D. ?(9 ln 10 + 9)
Mathematics
Graph the function f(x) over the given interval. Partition the interval into 4 subintervals of equal length. Then add to your sketch the rectangles associated with the Riemann sum 
, using the indicated point in the kth subinterval for ck.f(x) = -4x2, [0, 4], left-hand endpoint
A. 
B. 
C. 
D. 
Mathematics
Evaluate.
- 
A. -6
B. 
C. - 
D. - 
Mathematics
Solve the system by elimination.-7x - 6y = -13-3x + 3y = -39
A. {(7, -6)} B. {(6, -5)} C. ? D. {(7, -5)}
Mathematics