Introduction to Matrices

Question 1

How many nonzero elements are in the matrix below?

Revolt · Accepted Answer

19

Question 2

The matrix below represents the number of minutes four friends spend driving to each others’ homes each week. A row label represents the friend driving and a column label represents the friend being visited.How many minutes does friend #1 spend driving to visit friend #3?

Revolt · Accepted Answer

45

Question 3

Matrices A and B shown below are equal. What is the value of

Revolt · Accepted Answer

–18

Question 4

Which matrix is equal to ?

Revolt · Accepted Answer

mc018-4.jpg

Question 5

Drina wrote the system of linear equations below.Which type of matrix can be formed using this system of equations?

Revolt · Accepted Answer

a square matrix

Question 6

Matrices C and D shown below are equal. What is the value of

Revolt · Accepted Answer

mc021-4.jpg

Question 7

Which matrix is equal to ?

Revolt · Accepted Answer

mc019-5.jpg

Question 8

Which is a square matrix?

Revolt · Accepted Answer

mc013-3.jpg

Question 9

Matrix A is shown below. Given that Matrix A equals Matrix B, what is the value of

Revolt · Accepted Answer

0

Question 10

The elements of Matrix C are shown below.If Matrix C equals Matrix D, which of the following is Matrix D?

Revolt · Accepted Answer

mc025-3.jpg

Introduction to Matrices Answers

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