Introduction to Matrices

Question 1

How many rows does your matrix have?

Revolt · Accepted Answer

2

Question 2

How many columns does your matrix have?

Revolt · Accepted Answer

3

Question 3

How many elements are in matrix T?

Revolt · Accepted Answer

25

Question 4

Given the matrix showing flight times between cities, which of the following statements is true?

Revolt · Accepted Answer

The flight time from city 2 to city 4 is 2.1 hours.; The matrix is square.; Using one or more flights, it is possible to get from any city to any other city.

Question 5

Use matrix T to find the following information.Which row contains the smallest nonzero element?

Revolt · Accepted Answer

2

Question 6

Which of the following sets of data would you likely represent with a square matrix? Check all that apply.

Revolt · Accepted Answer

A tennis club has a tournament in which each member plays every other member, and represents the scores in a matrix.; A coefficient matrix is used to represent a linear system with 3 equations and 3 unknowns.

Question 7

If two matrices, A and B, are equal, which of the following statements are true?

Revolt · Accepted Answer

Both matrices must be the same size.; For any value of i, j: aij = bij.

Question 8

b11 = b12 = b13 = b21 = b22 = b23 = b31 = b32 = b33 =

Revolt · Accepted Answer

Part 1: 9; Part 2: -2; Part 3: 3; Part 4: 2; Part 5: 17; Part 6: 0; Part 7: 3; Part 8: 22; Part 9: 8

Question 9

What is the value of t34?

Revolt · Accepted Answer

3.8

Question 10

Which of the following statements are true?

Revolt · Accepted Answer

All diagonal matrices are square matrices.; The size of any square matrix is m x m, where m is a positive integer.

Introduction to Matrices Answers

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