Question

ajutor va rog e urgent...doar la c)...va rog frumos.......ajutati-mă....ajutor e urgenttttttttttt...vă rogggggggggggggggggggggggg :(((((((((((((((((((((((((((

Answer 1

Transformam in dm. si aplicam teorema lui Tales in cazul paralelismului: 
 din AB II QR ⇒$\frac{AP}{AR}=\frac{BP}{BQ}$ 
 din BC II PR⇒ $\frac{BP}{BQ}=\frac{CR}{QC}$ ⇒$\frac{AP}{AR}= \frac{CR}{QC},deci, \frac{2}{8}= \frac{3}{QC},rezulta,QC= \frac{8*3}{2}=12$