A Vector $\overrightarrow { \mathrm { A } }$ Is Added To

question 64

Multiple Choice

A vector $\overrightarrow { \mathrm { A } }$ is added to $\overrightarrow { \mathbf { B } } = 6 \hat { \mathbf { i } } - 8 \hat { \mathbf { j } }$ .The resultant vector is in the positive x direction and has a magnitude equal to $\overrightarrow { \mathrm { A } }$ .What is the magnitude of $\overrightarrow { \mathrm { A } }$ ?

• A)11
• B)5.1
• C)7.1
• D)8.3
• E)12.2

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Definitions:

Break-Even Point

The level of operations at which a company’s revenues and expenses are equal.

Contribution Margin Ratio

A financial metric that measures a product's profitability by calculating the difference between its sales and variable costs as a percentage of total sales.

Fixed Costs

Expenses that do not change with the level of production or sales over a certain range and time period.

Variable Costs

Costs that vary in direct proportion to changes in the level of production or sales volume.