Based on the Pew Research's Social Media Usage 2005-2015 Study,which

question 30

Multiple Choice

Based on the Pew Research's Social Media Usage 2005-2015 study,which of the following statements is true?

• A)Social media usage has increased slightly in the last decade.
• B)Most American adults get their news from social media sites.
• C)Nearly half of all American adults use social networking sites.
• D)Social media usage has remained stable for the last decade.

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Definitions:

Minors

Submatrices formed by deleting one or more rows or columns from a matrix, used in the calculation of determinants and inverses.

Augmented Matrix

A matrix created by adding the columns of two specified matrices together, usually representing a system of linear equations.

Back-substitution

A method used in algebra to solve systems of equations by solving one equation first and then substituting its value into other equations.

Variables

Symbols in mathematics that represent unknown quantities or can take on various values in an equation or expression.