20. An aquarium contains 10 gallons of polluted water. A filter is attachedto this aquarium which drains off the polluted water at the rate of 5 gal-lons per hour and replaces it at the same rate by pure water. How longdoes it take to reduce the pollution to half its initial level?

Answered: Image /qna-images/answer/fe7f7eb8-6097-41f6-a7a1-a5dc1c1d15bc.jpg

Answered: 20. An aquarium contains 10 gallons of…

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...

See similar textbooks

Similar questions

6
A chemical dissolves in water at the rate to the amount still undissolved. Initially there is 600 grams of the chemical. If at the end of 30 minutes there is 400 grams left, it will take how many minutes until 95% of the chemical is dissolved?
3. A certain boat traveled 32 kilometers along with the current and 16 kilometers against the current. In the same amount of time, find the rate of the boat if the rate of the current is 2 kph.
(please solve within 15 minutes I will give thumbs up thanks)
Drinking water is treated with fluoride before it is made available to the public. The ideal level is 0.7 ppm. A 20,000 gallon mixing tank is half full and contains 2 lb of fluoride. Fresh water enters from the lake at 2 gallons per minute. If the tank is dis- charged at 1 gallon per minute, how many pounds of fluoride is in the tank the moment it is full? Is it safe to drink using the conversion 1 lb/gal (US) = 119826 ppm?
Please show all work. Thank you so much.
The prescriber ordered 30mg/m2 of a drug PO start for a patient who has a BSA of 1.45m2 . The ‘safe dose range’ for this drug is 20 to 40mg per day. Calculate the prescribed dose in milligrams and determine if it is within the safe range.
12. A boat takes 2/3 as much time to travel downstream than to travel upstream. If the rate of the water current is 8 kph, what is the rate of the boat in still water? A. 38 kph C. 40 kph B. 42 kph D. 45 kph
10. A ladder 20 feet long leans against a building. If the bottom of the ladder slides away from the building horizontally at a rate of 2 ft./ sec. How fast is the ladder sliding down the house when the top of the ladder is 8 feet from the ground. A. -2.5825 m/s C. -7.5825 m/s B. -6.5825 m/s D. -4.5825 m/s

Recommended textbooks for you

Calculus: Early Transcendentals

Calculus

ISBN:

9781285741550

Author:

James Stewart

Publisher:

Cengage Learning

Thomas' Calculus (14th Edition)

Calculus

ISBN:

9780134438986

Author:

Joel R. Hass, Christopher E. Heil, Maurice D. Weir

Publisher:

PEARSON

Calculus: Early Transcendentals (3rd Edition)

Calculus

ISBN:

9780134763644

Author:

William L. Briggs, Lyle Cochran, Bernard Gillett, Eric Schulz

Publisher:

PEARSON

Calculus: Early Transcendentals

Calculus

ISBN:

9781285741550

Author:

James Stewart

Publisher:

Cengage Learning

Thomas' Calculus (14th Edition)

Calculus

ISBN:

9780134438986

Author:

Joel R. Hass, Christopher E. Heil, Maurice D. Weir

Publisher:

PEARSON

Calculus: Early Transcendentals (3rd Edition)

Calculus

ISBN:

9780134763644

Author:

William L. Briggs, Lyle Cochran, Bernard Gillett, Eric Schulz

Publisher:

PEARSON

Calculus: Early Transcendentals

Calculus

ISBN:

9781319050740

Author:

Jon Rogawski, Colin Adams, Robert Franzosa

Publisher:

W. H. Freeman

Precalculus

Calculus

ISBN:

9780135189405

Author:

Michael Sullivan

Publisher:

PEARSON

Calculus: Early Transcendental Functions

Calculus

ISBN:

9781337552516

Author:

Ron Larson, Bruce H. Edwards

Publisher:

Cengage Learning

SEE MORE TEXTBOOKS

20. An aquarium contains 10 gallons of polluted water. A filter is attached to this aquarium which drains off the polluted water at the rate of 5 gal- lons per hour and replaces it at the same rate by pure water. How long does it take to reduce the pollution to half its initial level?