Latest exam Aptitude Question SOLUTION: How do I simplify .4/-.18?

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Previous Question: I need help. For the following problem I found no solution: 2log2 (x+6) - log2 16 = 2 heres my work: log2 x^2+36-16 = 2 x^2+20 = 2^2 x^2+20 = 4 x^2=-16 then there is no real number for the square root of -16 Next Question: How many gallons of a 4% acid solution should be mixed with 20 gallons of a 10% acid solution to obtain a mixture that is 5% acid?

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How do I simplify .4/-.18?: Asked In exam (10 years ago); Unsolved; Is this Puzzle helpful? (0) (0) Submit Your Solution

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Previous Question: I need help. For the following problem I found no solution: 2log2 (x+6) - log2 16 = 2 heres my work: log2 x^2+36-16 = 2 x^2+20 = 2^2 x^2+20 = 4 x^2=-16 then there is no real number for the square root of -16 Next Question: How many gallons of a 4% acid solution should be mixed with 20 gallons of a 10% acid solution to obtain a mixture that is 5% acid?

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