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A and D are equal matrices

Step-by-step explanation:

Two matrices are equal if they have the same dimensions (numbers of rows and columns)

∵

- Multiply each element by -2

∴

∵ Matrix A has 3 rows and 2 columns

∴ Its dimensions are 3 × 2

∵ Matrix B has 2 rows and 3 columns

∴ Its dimensions are 2 × 3

- Equal matrices has equal dimensions and equal corresponding

   elements

∵ A and B has different dimensions, so they can not be equal

∴ A ≠ B

∵  

∴ The dimensions of C are 3 × 2

- Divide the two sides of the matrix by 3 to find C

∴  

∵ A and C have same dimensions but they have different

   corresponding elements

∴ A ≠ C

∵

- Multiply each element by -1

∴  

∵ The dimensions of D are 3 × 2

∵ The corresponding elements of A and D are equal

∴ A and D are equal matrices

answer: the resulting cross section is a rectangle. solution: a plane parallel to the base of a triangular prism will intersect a cross section that is the same shape as its bases. so the cross section is a triangle.

step-by-step explanation:

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step-by-step explanation: