Find the Domain Of $x$ In the Expression $\sqrt { 25 - x ^ { 2 } }$

question 76

Multiple Choice

Find the domain of $x$ in the expression. Use a graphing utility to verify your result.
$\sqrt { 25 - x ^ { 2 } }$

• A) \(( - 25,25 )\)
• B) \([ - 25,25 ]\)
• C) \(( - 5,5 )\)
• D) \([ - 5,25 )\)
• E) \([ - 5,5 ]\)

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Definitions:

Manipulation of Variable

The process in experimental research of changing one variable to determine if changes in one variable cause changes in another variable.

Confounds

Variables that obscure the clear understanding of the relationship between different variables in a study, due to their intertwined effects.

Dependent Variable

In scientific research, the variable that is measured to see how it is affected by changes in another variable (the independent variable).

Independent Variable

In research, this is the variable that is manipulated or changed to observe its effect on a dependent variable.