Precalculus: Mathematics for Calculus, 7th Edition

Published by Brooks Cole
ISBN 10: 1305071751
ISBN 13: 978-1-30507-175-9

Chapter 1 - Section 1.1 - Real Numbers - 1.1 Exercises - Page 10: 1

Answer

a. 1 b.-1 c.$ \frac{3}{7}$ d.$\pi$

Work Step by Step

a. A natural number is a positive integer such as 1, 2, 3, 4, 5, etc. b. An integer is a whole number, or a number that is not a fraction such as 1 or -1. -1 is a correct answer because it is an integer but it is not a natural number, because it is negative. c. A rational number is a number that can be expressed as a fraction. $ \frac{3}{7}$ is a correct answer because it is a fraction, and it is not a whole number so it is not an integer. d. An irrational number is a number that cannot be represented in a ratio of two integers. $\pi$ is an irrational number because it cannot be represented in a ratio of two integers.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.