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What does Selena have to get on the final exam to get a 90 for the course? E is the variable that represents what Selena has to get on the final exam to get a 90 for the course. Set up the equation. Because Selena studied all semester, she only has to get a 79 on the final to get a 90 for the course. Complete the table to find an equation relating the sale price to the retail price the price before the sale. Retail price is the original price to the consumer or the price before the sale.

Discount is how much the consumer saves, usually a percentage of the retail price. Sale Price is the retail price minus the discount. The coefficient of R is one, so the arithmetic for combining like terms is 1 - 0. The large rectangle represents the retail price. The retail price has two components, the sale price and the discount. Percentages play an integral role in our everyday lives, including computing discounts, calculating mortgages, savings, investments, and estimating final grades.

When working with percentages, remember to write them as decimals, to create tables to derive equations, and to follow the proper procedures to solve equations. This unit introduces algebra by examining similar models. You should be able to read a problem and create a table to find an equation that relates two variables.

If you are given information about one of the variables, you should be able to use algebra to find the other variable. Adding or subtracting unlike signs: Subtract the two numbers and use the sign of the larger, more precisely, the sign of the number whose absolute value is largest. Multiplying or dividing like signs: The product or quotient of two numbers with like signs is always positive.

Multiplying or dividing unlike signs: The product or quotient of two numbers with unlike signs is always negative. M ultiplication and D ivision left to right 4. A ddition and S ubtraction left to right. Simplify both sides of the equation. In politics, percentages are even used to decide who wins elections. Read this article to learn what a percentage is, and how to calculate one! A percentage represents a fraction with as the denominator. Here are a few more examples:. To write fractions as percentages, we have to find an equivalent fraction with a denominator of Here are some other examples:.

You would use the same steps to figure out the amount of a tip. Read percentage problems carefully. If she sells 30 candy bars, how much commission will she earn? If you have a calculator handy, you can change the percentage into a decimal, and multiply the total amount by the decimal to get your answer.

There are tons of opportunities to practice percentage problems in daily life. You can also survey your friends about their likes and dislikes, and report the results using percentages. Parents across the country are starting to question the impact that math homework has on their children. Math homework can be especially tricky because there are so many different formulas and procedures to remember. Students from elementary, through high school, even college, who are experiencing difficulties with their math homework can find some aid online thanks to Internet homework helper sites.

Homework Help for Percentages A percentage represents a fraction with as the denominator. Here are a few more examples: Here are some other examples: Change the fraction to a decimal by dividing the numerator by the denominator. You can do this by hand or with a calculator. Multiply the resulting decimal by

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Homework Help for Percentages. A percentage represents a fraction with as the denominator. Percentages are written using the percent sign (%). For instance, the fraction 50/ is written as 50%, and the fraction 8/ is written as 8%.

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Nov 26,  · I need help with a few questions on my homework: 1.) g as a percentage of 1kg? 2.) 30cm as a percentage 2m? 3.) mm as a percentage of m?Status: Resolved. Math help Assignment 2: Use and Misuse of Percentages One of the concepts you encountered in the readings this module was how to recognize the use and misuse of information presented in the form of percentages. .

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