Solve the Problem Using Matrices $80 \mathrm {~cm}$ the Sum of the Two Longer Pieces Is

question 472

Multiple Choice

Solve the problem using matrices.
-Jerry has three pieces of string. The total length is $80 \mathrm {~cm}$ . The sum of the two longer pieces is $69 \mathrm {~cm}$ . The middle piece is twice as long as the shortest piece. What are the lengths of the three pieces?

• A) \(5.5 \mathrm {~cm} ; 11 \mathrm {~cm} ; 63.5 \mathrm {~cm}\)
• B) \(11 \mathrm {~cm} ; 47 \mathrm {~cm} ; 57 \mathrm {~cm}\)
• C) No solution
• D) \(11 \mathrm {~cm} ; 22 \mathrm {~cm} ; 47 \mathrm {~cm}\)

---

Definitions:

Attitude Object

A target of an individual's attitudes, which can be anything a person has an opinion or belief about, such as a physical object, a concept, or a person.

Physiological Experiences

Bodily sensations and responses associated with emotions and feelings.

Attitudes

Persistent mental states or dispositions that express an individual's evaluation of a person, object, or idea, which can influence behavior.

Consciously Aware

The state of being fully alert and aware of one's thoughts, feelings, and surroundings.