Book Maths Puzzle Log and Antilog

HOw do I solve log16 2=w

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Book Other Question

Sally can paint a house in 4 hours and Joe can paint the same house in 6 hours. If they work together how long will it take them to paint the house?



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If 23.00 grams of a 45.00 gram sample of unknown isotope remain after 17 days 12 hours, what is the half-life of the unknown isotope to the nearest minute?