Textbook Question
Write each number in scientific notation. 0.0083
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Ch. P - Fundamental Concepts of Algebra
Blitzer8th EditionCollege AlgebraISBN: 9780136970514
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Table of contents
- Ch. P - Fundamental Concepts of Algebra311
- Ch. 1 - Equations and Inequalities398
- Ch. 2 - Functions and Graphs407
- Ch. 3 - Polynomial and Rational Functions306
- Ch. 4 - Exponential and Logarithmic Functions247
- Ch. 5 - Systems of Equations and Inequalities173
- Ch. 6 - Matrices and Determinants143
- Ch. 7 - Conic Sections124
- Ch. 8 - Sequences, Induction, and Probability251
Chapter 1, Problem 85
In Exercises 85–96, simplify each algebraic expression. 5(3x+4)−4
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Distribute the 5 across the terms inside the parentheses. This means multiplying 5 by each term inside the parentheses: \(5 \cdot 3x\) and \(5 \cdot 4\).
Simplify the results of the distribution: \(5 \cdot 3x = 15x\) and \(5 \cdot 4 = 20\), so the expression becomes \(15x + 20 - 4\).
Combine like terms. In this case, combine the constants \(20\) and \(-4\) to simplify the expression further.
Write the simplified expression after combining the constants. The result will be in the form \(15x + c\), where \(c\) is the simplified constant term.
Verify that no further simplification is possible, ensuring the expression is in its simplest form.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Distributive Property
The Distributive Property states that a(b + c) = ab + ac. This property allows us to multiply a single term by each term within a parenthesis. In the given expression, applying the distributive property to 5(3x + 4) means multiplying 5 by both 3x and 4, which simplifies the expression.
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Combining Like Terms
Combining like terms involves simplifying an expression by adding or subtracting terms that have the same variable raised to the same power. After distributing, the expression may contain terms that can be combined, such as constants or terms with the same variable, to further simplify the expression.
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Order of Operations
The Order of Operations is a set of rules that dictates the sequence in which calculations should be performed to ensure consistent results. The acronym PEMDAS (Parentheses, Exponents, Multiplication and Division, Addition and Subtraction) helps remember this order. In simplifying the expression, following this order is crucial to correctly evaluate and combine terms.
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Related Practice
Textbook Question
Find each product. (x+7y)(3x-5y)
Textbook Question
In Exercises 65–92, factor completely, or state that the polynomial is prime. x2−10x+25−36y2
Textbook Question
In Exercises 65–92, factor completely, or state that the polynomial is prime. 20y4−45y2
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Textbook Question
In Exercises 83–90, perform the indicated operations. Simplify the result, if possible. (2−6/(x+1))(1 + 3/(x−2))
Textbook Question
Write each number in scientific notation. −0.00000000405
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