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Q: A: ### Quick Answer

**The fourth root of 16 is 2.** In mathematics, the fourth root of a number is a number r that yields z when raised to power 4, where 4 is the degree of the root.

Roots are usually written in mathematics using the radical symbol. Any expression that contains a radical is referred to as a radical expression. Roots are important in various theories, particularly the theory of infinite series. The origin of roots is mostly speculative, but it is believed Arabic mathematicians started to use it as early as the 13th century. The square root is the most common root operation.

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## What is an inequality in math?

A:In mathematics, inequalities are a set of five symbols used to demonstrate instances where one value is not the same as another value. The five symbols are described as "not equal to," "greater than," "greater than or equal to," "less than" and "less than or equal to."

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## What is an open sentence?

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Full Answer >**In mathematics, an open sentence is an algebraic expression without a definite truth value, which means that the statement's veracity or falsity is uncertain.**Open sentences contain variables, which are denoted by letters to represent unknown values.Filed Under: - Q:
## What is a well-defined set in mathematics?

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Full Answer >**In mathematics, a well-defined set clearly indicates what is a member of the set and what is not.**For example, a set that is identified as "the set of even whole numbers between 1 and 11" is a well-defined set because it is possible to identify the exact members of the set: 2, 4, 6, 8 and 10. There is only one possible solution set that fits this description.Filed Under: - Q:
## What is the difference between a constant and a variable?

A:In mathematics, a variable is a symbol used for a number not yet known, while a constant is a number or symbol that has a fixed value. The value of a variable can change depending on the equation, while the value of a constant always remains the same.

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