Solve Simplify the Answer $1 \frac { 1 } { 8 }$

question 273

Multiple Choice

Solve. Simplify the answer.
-A laminated lab bench has $1 \frac { 1 } { 8 }$ inches of plywood, $1 \frac { 1 } { 5 }$ inches of pressed board, and $\frac { 1 } { 2 }$ of an inch of formica. What is the thickness of the lab bench?

• A) \(\frac { 21 } { 25 } \mathrm { in }\).
• B) \(1 \frac { 4 } { 21 } \mathrm { in }\).
• C) \(\frac { 40 } { 113 } \mathrm { in }\).
• D) \(2 \frac { 33 } { 40 } \mathrm { in }\).

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Definitions:

Relational Database

A relational database is a type of database that organizes data into tables which can be linked—or related—based on data common to each.

Data Hierarchy

Data hierarchy is a systematic organization of data, often in a hierarchical form, that starts with the smallest unit of data and aggregates up to more complex forms like databases or data warehouses.

Primary Keys

Unique identifiers used in databases to distinguish records.

Foreign Keys

A field in a database table that uniquely identifies a row in another table, establishing a link between the two.