A quantity of a radioactive element decays ex amount of the radioactive element became tv the 10th day of the observation the amount (i) the initial amount of the radioactive eleme (ii) how many days is required in order to ha-
A quantity of a radioactive element decays ex amount of the radioactive element became tv the 10th day of the observation the amount (i) the initial amount of the radioactive eleme (ii) how many days is required in order to ha-
Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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
Transcribed Image Text:4. A quantity of a radioactive element decays exponentially. On the 20th day of observation the
amount of the radioactive element became twice smaller compare to the initial amount. On
the 10th day of the observation the amount of the element was 50mg. Find:
(i) the initial amount of the radioactive element;
(ii) how many days is required in order
initial one.
have an amount that is ten times smaller than the
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