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You see an advertisement for an atomic clock. You also known that radioactive decay emits harmful radiation.? Tangent alpha multiplied by cosine alpha = sin A. prove this proof? A probability experiment consists of rolling a fair 18-sided die. Find the probability of the event below.
rolling a number divisible by 4? What are Keck observatories lasers for? A child and a sled with a combined mass of 50.0 kg slide down a friction-less slope.?