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Anonymous
Anonymous asked in 科學及數學數學 · 1 decade ago

percentages的project!(20點)

我要做一個project是關於percentages的?

問題1:percentages是甚麼?

問題2:請給我一個關於percentages的故事!

問題3:a innovative ideas of percentages

問題4:一個brief的introduction and conclusion

~請回答的一定要用英文!因為我的project要用英文!

2 Answers

Rating
  • 1 decade ago
    Favorite Answer

    In mathematics, a percentage is a way of expressing a number as a fraction of 100 (per cent meaning "per hundred"). It is often denoted using the percent sign, "%". For example, 45% (read as "forty-five percent") is equal to 45 / 100, or 0.45.

    Percentages are used to express how large one quantity is relative to another quantity. The first quantity usually represents a part of, or a change in, the second quantity. For example, an increase of $ 0.15 on a price of $ 2.50 is an increase by a fraction of 0.15 / 2.50 = 0.06. Expressed as a percentage, this is therefore a 6% increase.

    Although percentages are usually used to express numbers between zero and one, any dimensionless proportionality can be expressed as a percentage. For instance, 111% is 1.11 and −0.35% is −0.0035.

  • 1 decade ago

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