Any one - it will depend on the situation.
It usually represents a part of a whole.
where could you find a pentagon in the real world
Any time that anything is shared - even if unequally.
If you are talking about the fraction bar in mathematics, the "fraction bar" is the real name. It is sometimes called a vinculum (although this is a misuse of the word). The fraction bar in amateur radio, also known as the forward slash is officially known as the "fraction bar."
You do not do anything. An improper fraction IS a real number.
Some real numbers can be expressed as a rational fraction.
Yes. A real number is any comprehendable number, from negative infinity to positive infinity. A rational number is any number that can be the answer to a division equation; an integer, fraction, or a decimal. An irrational number is any number that cannot be expressed as a fraction; such as exponents.
No. A quotient is the result of a division. You can divide any real number by any other real number except zero. Most quotients are not whole numbers.Not always because the quotient could be a decimal or a fraction.
The line in a fraction can be read as "divided by." -4 divided by 15 is the same as -4/15
Fractions are real numbers.
A fraction is just a number. It's as real as any whole number (or decimal).
0.1 is a real number and 1/10 is a fraction. It is a proper fraction.