- $\mathrm { P } _ { 1 } ( - 4,6,5 )$

question 47

Multiple Choice

$\text { Calculate the direction of } \overrightarrow { P _ { 1 } P _ { 2 } } \text { and the midpoint of line segment } P _ { 1 } P _ { 2 } \text {. }$
- $\mathrm { P } _ { 1 } ( - 4,6,5 )$ and $\mathrm { P } _ { 2 } ( - 1,2,10 )$

• A) \(\frac { 3 } { 5 \sqrt { 2 } } \mathrm { i } + \frac { - 4 } { 5 \sqrt { 2 } } \mathrm { j } + \frac { 1 } { \sqrt { 2 } } \mathrm { k } ; \left( - \frac { 5 } { 2 } , 4 , \frac { 15 } { 2 } \right)\)
• B) \(\frac { 3 } { 5 \sqrt { 2 } } \mathbf { i } + \frac { - 4 } { 5 \sqrt { 2 } } \mathrm { j } + \frac { 1 } { \sqrt { 2 } } \mathbf { k } ; \left( - \frac { 1 } { 2 } , 1,5 \right)\)
• C) \(\frac { 3 } { 50 } \mathbf { i } - \frac { 2 } { 25 } \mathrm { j } + \frac { 1 } { 10 } \mathbf { k } ; \left( - \frac { 5 } { 2 } , 4 , \frac { 15 } { 2 } \right)\)
• D) \(\frac { 3 } { 50 } \mathbf { i } - \frac { 2 } { 25 } \mathbf { j } + \frac { 1 } { 10 } \mathbf { k } ; \left( - 2,3 , \frac { 5 } { 2 } \right)\)

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Definitions:

Androgyny

A blend of masculine and feminine characteristics in terms of traits, behaviors, or appearance.

Secondary Sex Characteristic

Physical features that emerge during puberty which are not directly involved in reproduction but distinguish the two sexes from each other.

Spermarche

The commencement of sperm production in boys, marking the onset of puberty and reproductive capability.

Primary Sex Characteristic

The biological and physiological features including reproductive organs, that distinguish males and females.