Respuesta :

ak0006
r=5.4

4.2r-12.68=10
+12.68 +12.68
4.2r=22.68
4.2/4.2 22.68/4.2
22.68/4.2= 5.4

Hope this helps! Have a great day :)

Hi there!

r=5.4

1.Add the terms:

[tex]22.68*4.2=5.4[/tex]

2.Divide the two terms:

[tex]22.68*4.2=5.4[/tex]

Therefore, r=5.4.