1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ella [17]
3 years ago
6

The fish population of a lake is decreasing each year. A study is conducted. But, unfortunately some data was lost. The research

er found in her notes that in year one the fish population was 18000 fish and in year three the fish population was 8000 fish. Assume a constant rate of decay. Find a formula F
Mathematics
1 answer:
Solnce55 [7]3 years ago
4 0

Answer:

F(t) = 18000(0.6666)^{t}

Step-by-step explanation:

The fish population after t years can be modeled by the following equation:

F(t) = F(0)(1-r)^{t}

In which F(0) is the initial population and r is the constant rate of decay.

Year one the fish population was 18000

This means that F(0) = 18000

In year three the fish population was 8000 fish.

Two years later, so F(2) = 8000

F(t) = F(0)(1-r)^{t}

8000 = 18000(1-r)^{2}

(1-r)^{2} = 0.4444

\sqrt{(1-r)^{2}} = \sqrt{0.4444}

1 - r = 0.6666

r = 0.3334

So

F(t) = 18000(0.6666)^{t}

You might be interested in
Factor the expression.<br><br> 15n−18
Taya2010 [7]
Divide each term by 3...
15n - 8 = 3(5n - 6)


6 0
3 years ago
Read 2 more answers
Fill the blank bellow.....
Lemur [1.5K]

slope = (y2-y1)/(x2-x1)

the first slope is 0 (horizontal line)

second slope is undefined (vertical line)

3 0
2 years ago
36 even : 12 odd in simplest form
vesna_86 [32]
3 even: 1 odd..................................
7 0
3 years ago
Read 2 more answers
Juan will spend $28 on gifts. So far, he has spent 16. What are the possible additional amounts he will spend?
harina [27]

Answer:

16

Step-by-step explanation:

because juan is spend 28 on gift and he added a 16 .

7 0
2 years ago
If _____, use threshold braking any time you need to brake hard.
Inessa [10]

Answer:

The correct option is;

A. You don't have ABS

Step-by-step explanation:

A car braking system works by the friction action the break pad applies on the wheels, when the break is applied with much force, due to hard and sudden breaking of the motion of the vehicle, the break pad stops the rotation of the wheels but the vehicle could however continue skidding due to the high initial momentum

The being skidding vehicle in a situation of kidding increases the likelihood for an accident as the the vehicle can no longer be controlled at the steering either

Threshold braking is the technique of bringing the vehicle to a stop or slowing down in the shortest time possible by applying an optimum breaking force during breaking

Anti-lock Braking System is a safety feature that prevents skidding by keeping the wheels of the vehicle or aircraft from locking when excessive break is applied such that traction maintained between the wheels and the road.

3 0
3 years ago
Other questions:
  • What is the area of DeltaSTR?
    6·2 answers
  • Based on the data from six students, the regression equation relating number of hours of preparation (x) and test score (y) is .
    7·2 answers
  • The per capita electric power consumption level in a recent year in Ecuador is normally distributed, with a mean of 471.5 kilo-w
    14·1 answer
  • What are the degree and zeros of the polynomial f(x)=(x-2)^5
    6·1 answer
  • Two angles form a linear pair. One angle measures 8 less than three times the other. Find the measures of the angles.
    8·1 answer
  • A system of linear equations is graphed. Which ordered pair is the best estimate for the solution to the system? (0, −2) (−412,
    7·1 answer
  • Kay is going to do some work in her garden. Her garden is in the shape of a rectangle. Kay thinks she can buy enough paint to co
    15·1 answer
  • Mike can bind 109 flowers per hour, John can bind 116 flowers
    6·1 answer
  • Reflect the image over the y-axis and then translate 8 units down. What are the coordinates for C’?
    13·1 answer
  • Match each number on the left with the correct description of the number on the right.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!