The half life of radon in 4 days . From a sample of 450g determine an equation that can be used to model the amount remaining S , after T days THEN calculate the amount remaining after 20 days - round to one decimal

Suppose an Egyptian mummy is discovered in which the amount of carbon-14 present is only about two-sevenths the amount found in living human beings. - 0.0001216t where yo is the amount of carbon-14 present in living human The amount of carbon-14 present in animal bones after t years is given by y = yo e beings. About how long ago did the Egyptian die? Enter your search term About yr ago the Egyptian had died. (Round to the nearest integer as needed.)

Find the associated half-life time or doubling time. (Round your answer to three significant digits.) Q = 1200e−0.025t th =

Write a formula for the quantity described. The amount of a radioactive substance whose half-life is 5 days. Let Q0 be the initial amount of the substance present and t be the number of days.Round your answer to two decimal places.Note that "Q=" is already provided. Do not include this in your submitted response to this question.