A coroner arrives at a murder scene at 7 p.m. She finds the temperature of the body to be 86.4°F. She waits one hour, takes the temperature again, and finds it to be 82.8°F. She notes that the room temperature is 60°F. Assuming that the temperature of the body was 98.6°F when the murder occured, when was the murder committed? The murder was commited at approximately approximately (Do not round until the final answer. Then round to the nearest hour.)

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
icon
Related questions
Question
A coroner arrives at a murder scene at 7 p.m. She finds the temperature of the body to be 86.4°F. She waits one hour, takes the temperature again, and finds it
to be 82.8°F. She notes that the room temperature is 60°F. Assuming that the temperature of the body was 98.6°F when the murder occured, when was the
murder committed?
CZE
The murder was commited at approximately approximately
(Do not round until the final answer. Then round to the nearest hour.)
An office machine is purchased for $5100. Assume that its salvage value, V, in dollars, depreciates, according to a method called double declining balance, by
10% each year and is given by V(t)=5100(0.90), where t is the time, in years, after purchase.
a) Find V(3), and explain its meaning.
b) Find V'(3), and explain its meaning.
c) When will the salvage value of the office machine be half of the purchase price?
a) V(3) = $
(Round to the nearest cent needed.)
The expression V(3) means that after
year(s), the salvage value
Y
b) V'(3) = $
(Round to the nearest cent as needed.)
The expression V'(3) means that after
year(s), the salvage value
c) The salvage value of the office machine will be half of the purchase price after years.
(Round to two decimal places as needed.)
Transcribed Image Text:A coroner arrives at a murder scene at 7 p.m. She finds the temperature of the body to be 86.4°F. She waits one hour, takes the temperature again, and finds it to be 82.8°F. She notes that the room temperature is 60°F. Assuming that the temperature of the body was 98.6°F when the murder occured, when was the murder committed? CZE The murder was commited at approximately approximately (Do not round until the final answer. Then round to the nearest hour.) An office machine is purchased for $5100. Assume that its salvage value, V, in dollars, depreciates, according to a method called double declining balance, by 10% each year and is given by V(t)=5100(0.90), where t is the time, in years, after purchase. a) Find V(3), and explain its meaning. b) Find V'(3), and explain its meaning. c) When will the salvage value of the office machine be half of the purchase price? a) V(3) = $ (Round to the nearest cent needed.) The expression V(3) means that after year(s), the salvage value Y b) V'(3) = $ (Round to the nearest cent as needed.) The expression V'(3) means that after year(s), the salvage value c) The salvage value of the office machine will be half of the purchase price after years. (Round to two decimal places as needed.)
Expert Solution
steps

Step by step

Solved in 3 steps with 3 images

Blurred answer
Similar questions
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,