View the step-by-step solution to:

1)A water tank has a square base of area 2 square meters. Initially the tank contains 90 cubic meters. Water leaves the tank, starting at t=0, at the...

1)A water tank has a square base of area 2 square meters. Initially the tank contains 90 cubic meters. Water leaves the tank, starting at t=0, at the rate of 2 + 4 t cubic meters per hour. Here t is the time in hours. What is the depth of water remaining in the tank after 3 hours?

______ meters

2)Disease A starts killing people in 1900 at the rate of 10000 people per year. Disease B starts killing people in 1910 at the rate of 20000 people per year.

(a) Sketch on one diagram for the period 1900 to 1950 how many people in total have been killed by each disease.

(b) How many people have died from these two diseases t years after 1900? 

For disease A_______

For disease B when 0≤t≤10

_______

For disease B when 10≤t

_________

(c) In what year does the total number of people killed by the two diseases become equal? _____

(d) In what year does the total number of deaths first exceed half a million? ______

Top Answer

Question 1) Water leaves the tank at the rate r(t) = - (2 + 4t) m 3 /hr To determine the volume at any given time t, we can... View the full answer

IMG_20180504_104732.jpg

Sign up to view the full answer

Why Join Course Hero?

Course Hero has all the homework and study help you need to succeed! We’ve got course-specific notes, study guides, and practice tests along with expert tutors.

-

Educational Resources
  • -

    Study Documents

    Find the best study resources around, tagged to your specific courses. Share your own to gain free Course Hero access.

    Browse Documents
  • -

    Question & Answers

    Get one-on-one homework help from our expert tutors—available online 24/7. Ask your own questions or browse existing Q&A threads. Satisfaction guaranteed!

    Ask a Question
Ask a homework question - tutors are online