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Matrix Addition and Subtraction
Grade Level
ACT Prep
ACTM.067 Matrix Addition and Subtraction
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Using the displayed matrices A = [[7/3, -7/2], [3, 6], [-1/2, 2/3], [-5, -1]] and B = [[5/2, 8, -6, -3/2], [-6, -3, 0, 3]], choose the correct conclusion about A + B.
A
[[29/6, -19/2], [11, 3], [-13/2, 2/3], [-13/2, 2]]
B
[[29/6, 9/2], [-3, 3]]
C
[[29/6, 11, -13/2, -13/2], [-19/2, 3, 2/3, 2]]
D
Undefined; A is 4 x 2 and B is 2 x 4, so the matrices do not have matching dimensions.
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