Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Prerequisites - Review Exercises - Page 62: 2

Answer

a) None; b) $0$; c) $-22, 0$; d) $-22, -\dfrac{10}{3}, 0, 5.2, \dfrac{3}{7}$; e) $\sqrt{15}$

Work Step by Step

We are given the set of numbers: $\left\{\sqrt{15},-22,-\dfrac{10}{3},0, 5.2,\dfrac{3}{7}\right\}$ a) The set of natural numbers is $\{1,2,3,...\}$. There is no natural number in the given set. b) The set of whole numbers is $\{0, 1,2,3,...\}$. The whole number in the set is: $0$ c) The set of integer numbers is $\{-2,-1,0,1,2,...\}$. The integers in the given set are: $-22,0$ d) The set of rational numbers contains all numbers that can be written in the form $\dfrac{p}{q}$, where $p,q$ are integers, $q\not=0$. The rational numbers in the given set are: $-22, -\dfrac{10}{3}, 0, 5.2, \dfrac{3}{7}$ e) The irrational numbers are numbers which are not rational. The irrational number in the given set is: $\sqrt{15}$
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