Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN: 9780547587776

Author: HOLT MCDOUGAL

Publisher: HOLT MCDOUGAL

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Concept explainers

Percentage

A percentage is a number indicated as a fraction of 100. It is a dimensionless number often expressed using the symbol %.

Algebraic Expressions

In mathematics, an algebraic expression consists of constant(s), variable(s), and mathematical operators. It is made up of terms.

Numbers

Numbers are some measures used for counting. They can be compared one with another to know its position in the number line and determine which one is greater or lesser than the other.

Subtraction

Before we begin to understand the subtraction of algebraic expressions, we need to list out a few things that form the basis of algebra.

Addition

Before we begin to understand the addition of algebraic expressions, we need to list out a few things that form the basis of algebra.

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Question

Chapter 1.1, Problem 42E

To determine

To calculate : the value of b−c when a=2.5,b=15,c=3.5

Expert Solution & Answer

Answer to Problem 42E

The value of the expression is 11.5 when a=2.5,b=15,c=3.5

Explanation of Solution

Given information :

Consider, the expression provided in the question,

b−c

Calculation :

To evaluate the expression, it is needed to substitute 15 for b and 3.5 for c on the expression b−c

Therefore, the value of the expression is obtained as:

b−c=15−3.5b−c=11.5

Hence,

The value of the expression is 11.5.

Chapter 1.1, Problem 41E

Chapter 1.1, Problem 43E

Chapter 1 Solutions

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

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the value of b − c when a = 2.5 , b = 15 , c = 3.5

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To calculate : the value of b−c when a=2.5,b=15,c=3.5

Answer to Problem 42E

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