Elementary Algebra

Lynn Marecek, MaryAnne Anthony-Smith

$Math Studyset 91影视 Explanations$ Math

2nd Edition 路 1240 pages

ISBN: 9780998625713

Chapter 1: Q 262. (page 62)

What are the three uses of the 鈥� 鈭� 鈥� sign in algebra? Explain how they differ.

Short Answer

Expert verified

(1) $(9 - 3)$ :It can be used to subtract two numbers.

(2) $- 8 :$ It can be used to indicate negative numbers

(3) $- z :$ Indicates opposite of variable $z$

Step by step solution

Step 1. Given Information

It is asked to find explain three uses of the 鈥� 鈭� 鈥� sign in algebra.

Step 2. Explaining the minus sign

(1)

$(9 - 3)$ means subtracting $9$ and $3$

So, the minus sign can be used to subtract two numbers.

(2)

$- 8$ means negative of the number $8$

So, a minus sign can be used to make the sign of a number negative

(3)

$- z$ means opposite of a variable $z$

So, a minus can be used to make the sign of a variable negative.

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91影视

What are the three uses of the 鈥� 鈭� 鈥� sign in algebra? Explain how they differ.

Short Answer

Step by step solution

Step 1. Given Information

Step 2. Explaining the minus sign

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