Introduction to Matrices Answers

Which matrix is equal to ?

How many nonzero elements are in the matrix below?

Aliane created a table showing the flight information for four cities.Departing FromArriving AtFlight TimeCity ACity B4.2 hoursCity ACity C3.9 hoursCity BCity A5.1 hoursCity BCity D9.5 hoursCity CCity B1.7 hoursCity CCity D2.2 hoursCity DCity A10.5 hoursCity DCity B8.6 hoursWhich matrix correctly represents Aliane’s flight information?

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

Which is a square matrix?

Which matrix is equal to ?

Which of the following is a diagonal matrix?

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?

Dakarai wrote the system of linear equations below.Dakarai then wrote the coefficient matrix that represents this system. Which matrix could she have written?

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