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Mathematics 22 Online
OpenStudy (anonymous):

is it 3.25 ???

OpenStudy (anonymous):

OpenStudy (mathstudent55):

Close, but not 3.25.

OpenStudy (mathstudent55):

Look at MP and KP. How long in MK?

OpenStudy (anonymous):

14

OpenStudy (mathstudent55):

Once you find MK, enter all the known values in the proportion below and solve for JN. \( \dfrac{LJ}{JN} = \dfrac{MK}{KP} \)

OpenStudy (mathstudent55):

14 is correct. Now do the next step above.

OpenStudy (anonymous):

so. wat do i do with them

OpenStudy (mathstudent55):

Replace all segments in theproportion by the known values. LJ = 8 MK = 14 KP = 6 JN is still unknown so it remains as JN. Now solve for JN by cross multiplying. \( \dfrac{8}{JN} = \dfrac{14}{6} \)

OpenStudy (anonymous):

48 ang idk

OpenStudy (anonymous):

\[\left\{\frac{8}{20-6}=\frac{\text{JN}}{6}, \text{JN} = \frac{24}{7}\right\},\left\{\frac{8}{\text{JN}}=\frac{14}{6},\text{JN} = \frac{24}{7}\right\} \]

OpenStudy (anonymous):

\[\frac{LJ}{JN}=\frac{MK}{KP} \rightarrow \frac{8}{JN}=\frac{14}{6} \] i.e. \[ JN = \frac{48}{14} =3.428 \approx 3.43\]

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