Adding and Subtracting Matrices

Question 1

Janelle wrote the matrix addition below.Which statement is true?

Revolt · Accepted Answer

mc017-2.jpg

Question 2

In the equation below, variables X and Y represent two matrices. Which property of matrix addition is illustrated below?

Revolt · Accepted Answer

commutative property

Question 3

Paul is taking inventory of unsold ladies’ dresses from last month. The following matrix shows how many of each dress were left in red, blue, white, and green. The matrix below shows the new stock of the same color dresses that arrived in the store today. Which matrix shows the total number of dresses of each color and size that Paul has in stock before any sales were made today?

Revolt · Accepted Answer

Answer image: https://media.edgenuity.com/evresources/3111-06-51/mc004-3.jpg

Question 4

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

Revolt · Accepted Answer

mc006-5.jpg

Question 5

Which property is shown in the matrix addition below?

Revolt · Accepted Answer

identity property

Question 6

Ramone wrote the following matrix equation.Which explains why Ramone’s equation has no solution?

Revolt · Accepted Answer

The matrices must be of the same size in order to perform addition or subtraction.

Question 7

Triangle ABC is translated using matrix subtraction. Which represents the resulting vertices after the translation?

Revolt · Accepted Answer

mc027-4.jpg

Question 8

What is the sum of the matrices shown below?

Revolt · Accepted Answer

Answer image: https://media.edgenuity.com/evresources/3111-06-51/mc001-3.jpg

Question 9

What are , , and of matrix C?

Revolt · Accepted Answer

mc024-5.jpg

Question 10

What is the sum of the matrices shown below?

Revolt · Accepted Answer

mc002-5.jpg

Adding and Subtracting Matrices Answers

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