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Can a rectangle sometimes be a kite? A coin is flipped 4 times. What is the probability of getting at least 1 tail? Write the complex number z=(-1+sqrt(3)i)^11 in polar form: z=r(cosθ+isinθ) where r = 2048
and θ = ?
The angle should satisfy 0≤θ<2π.? Updated calc question**? How many atoms of Ca are in 2000g of CaCl2?