Solve the Problem $\mathbf { u } = 7 \mathbf { i } - 4 \mathbf { j }$

question 67

Multiple Choice

Solve the problem.
-If $\mathbf { u } = 7 \mathbf { i } - 4 \mathbf { j }$ and $\mathbf { v } = - 2 \mathbf { i } + 9 \mathbf { j }$ , find $\mathbf { u } + \mathbf { v }$ .

• A) \(- 9 i + 5 j\)
• B) \(5 \mathbf { i } + 5 \mathbf { j }\)
• C) \(9 \mathbf { i } + 4 \mathbf { j }\)
• D) \(4 i + 5 j\)

---

Definitions:

Educational Level

A measure of the highest degree or level of education an individual has completed.

Threshold

The minimum level of stimulation or the level at which a certain effect begins to be produced, often used in economics, psychology, and physical sciences.

Grades

Levels of quality or performance, often used to categorize or rank things such as academic results or material purity.

Employers

Individuals or organizations that hire and pay employees for their labor.