I wanted to know if this Windows RT can be upgraded to Windows 10
No.
I have a Dell 5147 2 in 1 and got the Windows 10 as an update. The RT disappeared and after chipset and bios updates from Dell the Atom disappeared from processor. However the Windows 10 iso or unpacked version will not repair my system and it still has different cmd line programs than full Win 10. I am currently trying to install the big update KB3194798 and have tried all crazy resolutions to no avail. If the RT wasn't ready for the full version of Windows 10 then why stick me with it? Why not offer a version for us that works?