If $\overrightarrow { \mathbf { A } } = 12 \hat { \mathbf { i } } - 16 \hat { \mathbf { j } }$

question 57

Multiple Choice

If $\overrightarrow { \mathbf { A } } = 12 \hat { \mathbf { i } } - 16 \hat { \mathbf { j } }$ and $\overrightarrow { \mathbf { B } } = - 24 \hat { \mathbf { i } } + 10 \hat { \mathbf { j } }$ ,what is the direction of the vector $\overrightarrow { \mathrm { C } } = 2 \overrightarrow { \mathrm { A } } - \overrightarrow { \mathrm { B } }$ ?

• A)-49\(\degree\)
• B)-41\(\degree\)
• C)-90\(\degree\)
• D)+49\(\degree\)
• E)+21\(\degree\)

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Definitions:

Discrete Random Variable

A type of random variable that can take on a countable number of distinct values, often used to model scenarios where outcomes are countable.

Expected Number

The calculated average or mean value of a numerical random variable, representing what one expects to happen over numerous trials.

Probability Distribution

A statistical function detailing all potential values and their probabilities for a random variable within a specific range.

Probability Distribution

A mathematical function which calculates the likelihood of various possible results in an experiment.