Segment AB is 12 inches long. Points X and Y are selected on AB such that AX and BY are congruent, and the ratio of ZX to AY is 1:4. What is the length of BX? (Give your answer as an improper fraction or mixed number, NOT a decimal) 

What are the greatest common factor of 75 and 30

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How many and of which kind of roots does the equation f(x)=2x^4−9x^3+17x^2−16x+6 have?