in the diagram of MQP below, RN||QP,MR=4,RQ=9, and NP=18 what isntje length of MP?

In this problem we know that triangles RMN and QMF are similar so we know that this relation have be true so:
[tex]\frac{RM}{QR}=\frac{MN}{NP}[/tex]So we can find MN so:
[tex]\begin{gathered} \frac{4}{9}=\frac{MN}{18} \\ MN=\frac{18\cdot4}{9} \\ MN=8 \end{gathered}[/tex]So finali we can add MN with NP to find MP:
[tex]\begin{gathered} MP=8+18 \\ MP=26 \end{gathered}[/tex]