The definition of a complement is to do with "sets". Without getting too technical, the complement of a set of things is everything of interest apart from the set of things. So if you're working with the primary colours we have Red, Green, Blue. The compliment of Red, sometimes written Redc, is Green and Blue. With percentages it's quite simple:
If 40% of a group of people have a dog, then you know 60% of those people don't have a dog. This is because everyone (100%) must either have a dog or not have a dog.
Let's say that there's still 40% of the group who own a dog, and 30% of people own a cat. It might be tempting to say that 30% have no dog or cat because 100%-30%-40% is 30%. But the problem with that logic is that some people
could have a dog AND a cat. Then you would be counting them twice. We would need to know how many people had both a dog and a cat, let's say it's 5%. So of the people, 40% have a dog. That leaves 60%. 30% have a cat. That's 30%, but 5% of the people have been counted twice, for dogs and cats. SO we need to add them back on. So 35% of people have neither a cat or a dog in this example.
coca
Math sucks and math sucks
I'm pretty sure u add all the percents up and divide by how many percents you added up.
Percents are used to calculate tax on EVERY store purchase,and to calculate discounts on every "special" or "bargain".If you can't calculate percents, you can't catch mistakes or avoid being cheated.
5% reduction in enrollment
Fractions and Percents.
coca
percents are used to dealing with math for example you can always do 45/100% wich reduces to 450%.
algebra fraction decimal ratio percents
Math sucks and math sucks
It
lawyers use percents when figureing out prices and taxes of houses
A waitress need to use percents to calculate his or her tip. Also, it helps to be able to add up the bill correctly.
I'm pretty sure u add all the percents up and divide by how many percents you added up.
What do you mean by everyday math? Everyday Math is the University of Chicago School Mathematics Project, a curriculem that many schools across America use. for more information, look it up! or do you mean everyday math as in the math we use everyday such as things like telling Tim (it is math by the way!) or handling money and finding percents for a sale price?! and multipulcation
Percents are used to calculate tax on EVERY store purchase,and to calculate discounts on every "special" or "bargain".If you can't calculate percents, you can't catch mistakes or avoid being cheated.
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