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I am a caregiver and I want to know what I can give to my pacient that take Coumadin.? If a and b are roots of equation x^2 +x -12 =0 such that a>b then equation whose roots are 2a and 3b is ?Please!? If the fifth term of a geometric sequence is 81 and the common ratio is 3/4, find the sum of the first 20 terms? How do the capacitors C1 and C3 affect frequency response ? If a and b are positive integers such that gcd(a,b)=210, lcm[a,b]=210^3, and a** **