New PDF release: Algebra I For Dummies (For Dummies (Math & Science))

By Mary Jane Sterling

ISBN-10: 0470559640

ISBN-13: 9780470559642

I wanted a short refresher simply because i'm task searching and this occasionally comes up on interviews as a result of my career. I havent needed to use this kind of math for really some time although. I dont disagree although with a few reviewers who've complained that the cloth is not written for novices. I needed to fight with a lot of the booklet and needed to cross over yes chapters greater than as soon as. additionally, there is not approximately sufficient rationalization of yes key techniques. you're anticipated, for instance, to just accept advanced equation is an equation with an influence no more than 2 within which the equation is determined to equivalent 0. but the accompanying workbook used to be an excellent support; actually, there's barely enough clarification of every idea in every one bankruptcy of the workbook that i'll virtually suggest paying for the workbook in addition to the most textbook. in any case, notwithstanding it used to be a fight from time to time, i used to be in a position to train myself algebra from this publication, and was once in a position to take my placement examination with a passing grade. Like another commenters. i purchased this e-book simply because i'm searching for a brand new activity 2 years after leaving my previous one, and was once steered that I can be able to solution questions about it. i used to be panicked, simply because i used to be by no means a robust math pupil and have not taken a math classification in additional than 20 years.

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Extra resources for Algebra I For Dummies (For Dummies (Math & Science))

Example text

Remember: Positive numbers are always bigger than negative numbers. 4/16/10 11:03 AM 22 Part I: Starting Off with the Basics So, putting the numbers 6, –2, –18, 3, 16, and –11 in order from smallest to biggest gives you: –18, –11, –2, 3, 6, and 16, which are shown as dots on a number line in Figure 2-3. Figure 2-3: Positive and negative numbers on -20 -15 -10 -5 a number line. 0 +5 +10 +15 +20 Zeroing in on zero But what about 0? I keep comparing numbers to see how far they are from 0. Is 0 positive or negative?

Indd 14 4/16/10 11:01 AM Chapter 1: Assembling Your Tools 15 ✓ ÷ means divide. The number that’s going into the dividend is the divisor. The result is the quotient. Other signs that indicate division are the fraction line and slash, /. ✓ means to take the square root of something — to find the number, which, multiplied by itself, gives you the number under the sign. ) ✓ means to find the absolute value of a number, which is the number itself or its distance from 0 on the number line. 14159. . It represents the relationship between the diameter and circumference of a circle.

Here are some examples of changing improper fractions to mixed numbers: ✓ : The number 9 divides 11 once with 2 left over. ✓ : The number 7 divides 26 three times with 5 left over. ✓ : The number 11 divides 402 a total of 36 times with 6 left over. This example makes it especially apparent that the mixed number is more understandable. Taking on mixed numbers to make them improper To change a mixed number to an improper fraction, you multiply the whole number in front times the denominator; then you add the numerator to the product.

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Algebra I For Dummies (For Dummies (Math & Science)) by Mary Jane Sterling


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