- Cobalt 60 has a half life of 5 years. how many grams of a 300 g sample will remain after 20 years?

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Quadrilateral finding the x-10 +3x +25 +2x + 3x-15 =? Need to find the solutions to |2(x-1)| + y = 1 and x + 2|y-1| = 8 ? Since UV rays only span to exist to 420nm and UV rays damage cell tissue, do wavelengths greater have the same damaging effects? Not good with formula and math what would be the correct answer? Instagram mi ha disattivato l’account per limite di età. Sono maggiorenne ma non capisco cosa sia successo. Cosa devo fare?