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# ElementaryAlgebra MATH102

Solano Community College

GPA 3.94

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This 2 page Class Notes was uploaded by Mike Orn on Tuesday October 20, 2015. The Class Notes belongs to MATH102 at Solano Community College taught by ZacharyHannan in Fall. Since its upload, it has received 13 views. For similar materials see /class/225399/math102-solano-community-college in Mathematics (M) at Solano Community College.

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Date Created: 10/20/15

Test Review Ch 1 and 2 Math 102 Ch 1 Prealgebra review 1117 Properties of real numbers order of operations multiplying and dividing fractions etc It is assumed that you have either come into the class knowing this material or you have taken the time to review it in the first couple weeks of class 18 Prime Factorization The key point to take from this section is how to find the prime factorization of an integer Be able to use prime factorization to reduce fractions to lowest terms 19 Adding and subtracting fractions Use prime factorization to find the least common denominator LCD for two fractions Be able to convert fractions to a common denominator so you can add or subtract them Ch 2 Linear equations 21 Simplifying Expressions Know the difference between an expression and an equation An expression is just a collection of terms and our goal is to simplify it by combining like terms An equation involves an equals sign and our goal is to solve it find the value of the variable that makes the equation true Know how to combine like terms 7 you can only put together terms with exactly the same amount of each variable Be able to evaluate an expression if you are given a value for the variables 22 Addition property of equality The main idea is that you can add or subtract exactly the same amount from both sides of an equation Be able to get the constants to one side of the equation and the variables on the other by using this property 23 Multiplication property of equality The main idea is that you can multiply or divide both sides of the equation by the same amount Be able to use this property to get rid of a coefficient on the variable you are trying to isolate 24 Solving linear equations equations with only one variable appearing only to the 1st power To solve linear equations Distribute and combine like terms on both sides Use the addition property to get variables on one side constants on the other Use the multiplication property to isolate the variable Remember if there are fractions or decimals in an equation you can eliminate them in the first step by multiplying both sides by the least common denominator Remember that you can always check your answer by plugging the solution back into the original equation 25 About formulas Know perimeter and area formulas for triangles and rectangles Be able to solve for a desired variable in a formula Be able to do basic percent problems 26 27 A selection of word problems Be able to break apart and organize information from a word problem in a sensible way often a chart Be able to do classic problems number age geometry coin interest etc Know the geometry formulas used in this section sum of angles in a triangle complementary and supplementary angles perimeter etc 3quot w Linear inequalities Be able to solve a linear inequality using addition and multiplication rules Be able to deal with the sign issues when you multiply or divide by a negative the flippy thing Be able to turn an inequality around Be able to graph solutions to an inequality on the real number line 29 Compound inequalities Be able to solve and and or compound inequalities For and inequalities be able to use the compact notation multiple inequality signs to work with the problem and to write the solution Be able to graph the solutions to compound inequalities on the real number line

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