Question

Please help! Correct answer only, please! Consider the following information matrices for the price of clothing at a clothing store: Which of the following correctly describes? A. Cost of a Small Green t-shirt and a Large pair of Blue Jeans B. Cost of a Large Blue t-shirt and a Medium pair of RC Jeans C. Cost of a Small Green t-shirt and a Medium pair of RC Jeans D. Cost of a Large Blue t-shirt and a Large pair of Blue Jeans

Answer 1

Answer: b) Large blue t-shirt & Medium RC jeans

Explanation:

The subscript numbers attached to the matrix letter represents the:

ROW, COLUMN

`A=\left[\begin{array}{ccc}a_(1,1)&a_(1, 2)&a_(1, 3)\\a_(2,1)&a_(2, 2)&a_(2, 3)\\a_(3,1)&a_(3, 2)&a_(3, 3)\end{array}\right] \qquad B=\left[\begin{array}{ccc}a_(1,1)&b_(1, 2)&b_(1, 3)\\b_(2,1)&b_(2, 2)&b_(2, 3)\\b_(3,1)&b_(3, 2)&b_(3, 3)\end{array}\right]\\`

A₁,₃ = 1st row, 3rd column

1st row is Blue, 3rd column is Large

B₃,₂ = 3rd row, 2nd column

3rd row is RC jeans, 2nd column is Medium

A₁,₃ + B₃,₂ = Large blue t-shirt & Medium RC jeans