These dividend-paying companies have compelling valuations for long-term investors.Intel's (INTC 1.98%) stock price jumped over 22% on Thursday after Nvidia (NVDA -2.79%) announced a $5 billion investment in the chip manufacturer and a technological collaboration between the two companies. Nvidia stock rose 3.5% on the day because the collaboration could accelerate its data center and personal computing growth. Nvidia got a great deal for Intel -- only paying $23.28 per share, which is lower than the stock' ...