Solve
-The Area of a Rectangular Wall in a Classroom $= 12 \mathrm { ft }$

question 194

Multiple Choice

Solve.
-The area of a rectangular wall in a classroom is 396 square feet. Its length is 3 feet shorter than three times its width. Find the length and width of the wall of the classroom.

• A) Width \(= 12 \mathrm { ft }\); length \(= 33 \mathrm { ft }\)
• B) Width \(= 12 \mathrm { ft }\); length \(= 21 \mathrm { ft }\)
• C) Width \(= 12 \mathrm { ft }\); length \(= 39 \mathrm { ft }\)
• D) Width \(= 12 \mathrm { ft }\); length \(= 15 \mathrm { ft }\)

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Definitions:

Confidence Interval

A statistical measure that provides an estimated range of values likely to include a population parameter, calculated from a given set of sample data.

Population Mean

The population mean is the average value of all data points in a full set of values, representing the central tendency of the population.

Precision Control

The ability to maintain a very high level of accuracy and consistency in a process or measurement.

Confidence Interval

A scale of values, originating from sample statistical analysis, projected to house the value of an undetermined population parameter.