which choice is equivalent to the fraction below? (hint, rationalize the denominator and simplify.) 3-√3/3+√3 A. 2 B. 2-2√3 C. 2-√3 D. 3-2√3​

for calculating weighted mean of 64 patients with pulmonary tubfor calculating weighted mean of 64 patients with pulmonary tuberculosis by age group in Baghdad, find the arithmetic mean of the age of these patients, where Xj fj = 1660erculosis by age group in Baghdad, find the arithmetic mean of the age of these patients, where Xj fj = 1660

answer4 to the second power is 16

and 4 to the third power is 64,