Tourism in 2020 Because of the coronavirus pandemic, the actual number of people who visited Australia and South Africa in 2020 was much lower than predicted. Suppose the following table gives the number of people (in thousands) who visited Australia and South Africa in 2020 Australia South Africa To North America 80 250 From Central and South America 50 20 Europe 430 440 Referring to the 2020 tourism figures, assume that the following (fictitious) figures represent the corresponding numbers from 2019. Το Australia South Africa North America 1,010 430 From Central and South America 140 110 Europe 1,660 1,550 Take A to be the 3 x 2 matrix whose entries are the 2019 tourism figures (in thousands) and take B to be the 3 x 2 matrix whose entries are the 2020 tourism figures (in thousands). (a) Compute the matrix B - A. What does this matrix represent? ○ It represents changes in number of visitors over the period 2019-2020. It represents changes in number of visitors over the period 2020-2021. It represents changes in number of visitors in 2020. It represents changes in number of visitors in 2019. (b) Assuming that 2021 saw increases in every category equal in magnitude to half the 2020 losses, give a formula (in terms of A and B) that gives the number of visitors from the three regions to Australia and South Africa in 2021.
Tourism in 2020 Because of the coronavirus pandemic, the actual number of people who visited Australia and South Africa in 2020 was much lower than predicted. Suppose the following table gives the number of people (in thousands) who visited Australia and South Africa in 2020 Australia South Africa To North America 80 250 From Central and South America 50 20 Europe 430 440 Referring to the 2020 tourism figures, assume that the following (fictitious) figures represent the corresponding numbers from 2019. Το Australia South Africa North America 1,010 430 From Central and South America 140 110 Europe 1,660 1,550 Take A to be the 3 x 2 matrix whose entries are the 2019 tourism figures (in thousands) and take B to be the 3 x 2 matrix whose entries are the 2020 tourism figures (in thousands). (a) Compute the matrix B - A. What does this matrix represent? ○ It represents changes in number of visitors over the period 2019-2020. It represents changes in number of visitors over the period 2020-2021. It represents changes in number of visitors in 2020. It represents changes in number of visitors in 2019. (b) Assuming that 2021 saw increases in every category equal in magnitude to half the 2020 losses, give a formula (in terms of A and B) that gives the number of visitors from the three regions to Australia and South Africa in 2021.
Chapter1: Making Economics Decisions
Section: Chapter Questions
Problem 1QTC
Related questions
Question
am. 115.
Transcribed Image Text:Tourism in 2020 Because of the coronavirus pandemic, the actual number of people who visited Australia and South Africa in 2020 was much lower than predicted. Suppose the following table gives the number of people (in thousands) who visited Australia and South Africa in 2020
Australia South Africa
To
North America
80
250
From
Central and South America
50
20
Europe
430
440
Referring to the 2020 tourism figures, assume that the following (fictitious) figures represent the corresponding numbers from 2019.
Το
Australia South Africa
North America
1,010
430
From
Central and South America
140
110
Europe
1,660
1,550
Take A to be the 3 x 2 matrix whose entries are the 2019 tourism figures (in thousands) and take B to be the 3 x 2 matrix whose entries are the 2020 tourism figures (in thousands).
(a) Compute the matrix B - A.
What does this matrix represent?
○ It represents changes in number of visitors over the period 2019-2020.
It represents changes in number of visitors over the period 2020-2021.
It represents changes in number of visitors in 2020.
It represents changes in number of visitors in 2019.
(b) Assuming that 2021 saw increases in every category equal in magnitude to half the 2020 losses, give a formula (in terms of A and B) that gives the number of visitors from the three regions to Australia and South Africa in 2021.
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 2 steps
Recommended textbooks for you
Principles of Economics (12th Edition)
Economics
ISBN:
9780134078779
Author:
Karl E. Case, Ray C. Fair, Sharon E. Oster
Publisher:
PEARSON
Engineering Economy (17th Edition)
Economics
ISBN:
9780134870069
Author:
William G. Sullivan, Elin M. Wicks, C. Patrick Koelling
Publisher:
PEARSON
Principles of Economics (12th Edition)
Economics
ISBN:
9780134078779
Author:
Karl E. Case, Ray C. Fair, Sharon E. Oster
Publisher:
PEARSON
Engineering Economy (17th Edition)
Economics
ISBN:
9780134870069
Author:
William G. Sullivan, Elin M. Wicks, C. Patrick Koelling
Publisher:
PEARSON
Principles of Economics (MindTap Course List)
Economics
ISBN:
9781305585126
Author:
N. Gregory Mankiw
Publisher:
Cengage Learning
Managerial Economics: A Problem Solving Approach
Economics
ISBN:
9781337106665
Author:
Luke M. Froeb, Brian T. McCann, Michael R. Ward, Mike Shor
Publisher:
Cengage Learning
Managerial Economics & Business Strategy (Mcgraw-…
Economics
ISBN:
9781259290619
Author:
Michael Baye, Jeff Prince
Publisher:
McGraw-Hill Education