- Is it "a universe" or "an universe"?

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How do you find a equation of a line that is 2 units away from y=7? I am not understanding that answer...hmm. Could someone please help answer my question? Thanks so much!? Why are humans so ******* STUPID?!?!?! (yeah, answer that..do it)? If there are 20 grams of NaOH is added to 2L of 1M HCL solution calculate the concentration of H30 and OH in the solution.? What is the probability the second die is a 1 given the first die is a 1?