Given matrices A and B, find the indicated matrix if possible.A = 
, B = 
Find AB.
A. 
B. AB is not defined.
C. 
D. 
Answer: A
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Find an upper bound for the magnitude |E| of the error in the linear approximation L to f at the given point over the given region.
at 
R: |x - 1| ? 0.1, |y - 1| ? 0.1, |z - 1| ? 0.1
A. |E| ? 0.338 B. |E| ? 0.315 C. |E| ? 0.405 D. |E| ? 0.378
Solve the problem.A tree casts a shadow 41 m long. At the same time, the shadow cast by a 42-cm tall statue is 66 cm long. Find the height of the tree. Round results to the nearest unit.
A. 63 m B. 26 m C. 64 m D. 25 m
Solve the problem.A hockey team in one game scored on 50% of the total number of shots on its opponent's goalie. If the team scored a total of 8 goals, then how many shots did they direct at the opponent's goalie?
A. 32 B. 24 C. 16 D. 8
Solve the system of equations. x -y + 2z = -35x+ z = 0 x + 2y +z = 6
A. (0, 3, -3) B. (0, 0, 3) C. (3, 0, 0) D. (0, 3, 0)