AnswersTX-Advanced Quantitative ReasoningScalar and Matrix Multiplication

Scalar and Matrix Multiplication — Unit test Answers

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What is the product?

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Option A
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What is the determinant of the coefficient matrix of the system ?

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A
0
B
16
C
18
D
40
23

Each column of the matrix represents a vertex of a rectangle on the coordinate plane. If Fan scales the rectangle by finding 4A, what are the vertices of the scaled rectangle?

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A
(4, 4), (24, 4), (24, 20), (4, 20)
B
(5, 5), (10, 5), (10, 9), (5, 9)
C
(4, 4), (6, 1), (6, 5), (1, 5)
D
(5, 5), (6, 1), (6, 5), (4, 20)
24

What is the product?

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Option
Option A
B
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Option C
D
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Option D
25

What are the values of a, b, and c in the matrix addition below?

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