I need help Find the value of c

I Need Help Find The Value Of C class=

Answer :

Answer:

        c = 7

Step-by-step explanation:

From Thales:

                          [tex]\dfrac{UW}{VX}=\dfrac{WY}{XZ}\\\\\dfrac9c=\dfrac{27}{21}\\\\c\cdot27=9\cdot21\\\\c=\dfrac{9\cdot21}{27}=7[/tex]