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
Margaret [11]
3 years ago
10

The population of a town grows at a rate proportional to the population present at time t. The initial population of 500 increas

es by 25% in 10 years. What will be the population in 20 years? (Round your answer to the nearest person.) persons How fast is the population growing at t20 (Round your answer to two decimal places.) persons/yr
Mathematics
1 answer:
olga_2 [115]3 years ago
4 0

Answer:

The population would be 781.

The population is growing with the rate of 12.50 persons/yr.

Step-by-step explanation:

Since, the formula for calculating the population, increasing with a rate per period,

A=P(1+r)^{n}

Where, P is the initial population,

r is the rate per period,

n is the number of period,

t is the total years,

Here, P = 500, r = 25 % = 0.25, n = 2 ( the number of '10 year period' of in 20 years is 2 )

Hence, the population in 20 years would be,

A=500(1+0.25)^2=500(1.25)^2=781.25\approx 781

Now, the rate of increasing per 10 year is 25 %,

⇒ The rate of increasing per year is 2.5 %,

Thus, the growing people per year = 2.5 % of 500 = 0.025 × 500 = 12.50

Hence, the population is growing at 12.50 person per year.

You might be interested in
What is the solution set of the following equation?
Anna007 [38]
Im pretty sure x = -0.3

8 0
3 years ago
Can someone help me? ​
Dvinal [7]

Answer:

b

Step-by-step explanation:

trust me my guy ik this is ez

8 0
3 years ago
If f(a)=(a•a•a)-(a•a) + a-1 what is the value of f(-3)?
Elena L [17]

Answer:

-40

Step-by-step explanation:

f(a) = a³ - a² + a - 1

f(-3) = (-3)³ - (-3)² + (-3) - 1

f(-3) = (-27) - (9) + (-3) -1

f(-3) = -27 - 9 -3 - 1

f(-3) = -40

3 0
3 years ago
Evaluate c-2c−2c, minus, 2 when c=7c=7c, equals, 7.
____ [38]

Answer:

the correct answer would be 5

Step-by-step explanation:

when c=7, then we put that value in for c in the equation c-2

c-2

(7)-2

5

3 0
3 years ago
The distance on the map between Yappy City and Quiet City is 23 cm. What is the actual distance between the cities? 5 cm : 2 mil
S_A_V [24]

The actual distance between the cities will be equal to 9.2 miles.

<h3>What is an arithmetic operation?</h3>

The four basic mathematical operations are the addition, subtraction, multiplication, and division of two or even more integers. Among them is the examination of integers, particularly the order of actions, which is crucial for all other mathematical topics, including algebra, data organization, and geometry.

As per the given data in the question,

Distance between Yappy city and quit city is 23 cm.

As per the conversion is given in the question,

5 cm = 2 miles

Then, the number of miles of distance will be,

x = (2 × 23)/5

x = 9.2 miles.

To know more about arithmetic operations:

brainly.com/question/13585407

#SPJ1

3 0
1 year ago
Other questions:
  • Please Help me. I Need help fast. Only answer if you can explain your work.
    8·2 answers
  • What are the standard deviation and the relative standard deviation for the percent of cacl2?
    9·1 answer
  • Please help worth 10 points
    14·1 answer
  • 4v over 27 equals to 16
    13·1 answer
  • Sam initially invested $4,500 into a savings account that offers an interest rate of 3% each year. He wants to determine the num
    10·2 answers
  • Use the diagram to solve for x<br> 15x + 5<br><br> 16x+2
    14·2 answers
  • 25x2 – 20x – 2 = -6
    8·1 answer
  • Why is 3 times 1/10 less than 3 times 10
    11·1 answer
  • Wirte the expression the quotient of the quantity k minus 8 and m
    11·1 answer
  • What is the value of x?<br> 52°<br> 93°<br> (x + 3)<br> 78°
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!