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, Problem 15MCQ

To determine

To calculate : the value of the expression x+5y when x=20 and y=5 .

Expert Solution & Answer

Answer to Problem 15MCQ

The value of the expression x+5y when x=20 and y=5 is 5.

Explanation of Solution

Given information :

Consider, the expression,

x+5y

Calculation :

To evaluate the value of the expression, substitute, 20 for x and 5 for y .

Therefore,

The value of the expression is obtained as:

x+5y=20+55 [Add] = 255 [Divide] = 5

Hence,

The value of the expression x+5y when x=20 and y=5 is 5.

Chapter 1, Problem 14MCQ

Chapter 1, Problem 16MCQ

Chapter 1 Solutions

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

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the value of the expression x + 5 y when x = 20 and y = 5 .

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To calculate : the value of the expression x+5y when x=20 and y=5 .

Answer to Problem 15MCQ

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