Homework Help is Here – Start Your Trial Now!
Math
Advanced Math
5. lodine-131 is a radioactive isotope of iodine that is used in a sodium salt to diagnose thyroid disease. The half-life of lodine-131 is 8 days, which means that it takes 8 days for the sample to decay to half its original amount. Suppose you start with a 480 mg sample of lodine-131. a) How much will remain after 48 days? b) How long will it take for the isotope to decay to 15mg?

5. lodine-131 is a radioactive isotope of iodine that is used in a sodium salt to diagnose thyroid disease. The half-life of lodine-131 is 8 days, which means that it takes 8 days for the sample to decay to half its original amount. Suppose you start with a 480 mg sample of lodine-131. a) How much will remain after 48 days? b) How long will it take for the isotope to decay to 15mg?

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
See similar textbooks
icon
Related questions
Question
5. lodine-131 is a radioactive isotope of iodine that is used in a sodium salt to diagnose thyroid disease. The half-life of lodine-131 is 8 days, which means that it takes 8 days for the sample to decay to half its original amount. Suppose you start with a 480 mg sample of lodine-131. a) How much will remain after 48 days? b) How long will it take for the isotope to decay to 15mg? 6. The value of a car depreciates 12.5% per year after it is purchased. a) Write an equation that models the value V(t) of a $28 000 car after t years. b) What will the value be after 36 months? c) To the nearest tenth of a year (1 decimal), approximately how long will it take to reach half of its original value?
Transcribed Image Text:5. lodine-131 is a radioactive isotope of iodine that is used in a sodium salt to diagnose thyroid disease. The half-life of lodine-131 is 8 days, which means that it takes 8 days for the sample to decay to half its original amount. Suppose you start with a 480 mg sample of lodine-131. a) How much will remain after 48 days? b) How long will it take for the isotope to decay to 15mg? 6. The value of a car depreciates 12.5% per year after it is purchased. a) Write an equation that models the value V(t) of a $28 000 car after t years. b) What will the value be after 36 months? c) To the nearest tenth of a year (1 decimal), approximately how long will it take to reach half of its original value?
Expert Solution
steps

Step by step

Solved in 3 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Recommended textbooks for you
Advanced Engineering Mathematics
Advanced Engineering Mathematics
Advanced Math
ISBN:
9780470458365
Author:
Erwin Kreyszig
Publisher:
Wiley, John & Sons, Incorporated
Numerical Methods for Engineers
Numerical Methods for Engineers
Advanced Math
ISBN:
9780073397924
Author:
Steven C. Chapra Dr., Raymond P. Canale
Publisher:
McGraw-Hill Education
Introductory Mathematics for Engineering Applicat…
Introductory Mathematics for Engineering Applicat…
Advanced Math
ISBN:
9781118141809
Author:
Nathan Klingbeil
Publisher:
WILEY
Mathematics For Machine Technology
Mathematics For Machine Technology
Advanced Math
ISBN:
9781337798310
Author:
Peterson, John.
Publisher:
Cengage Learning,
Basic Technical Mathematics
Basic Technical Mathematics
Advanced Math
ISBN:
9780134437705
Author:
Washington
Publisher:
PEARSON
Topology
Topology
Advanced Math
ISBN:
9780134689517
Author:
Munkres, James R.
Publisher:
Pearson,
SEE MORE TEXTBOOKS