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
matrenka [14]
3 years ago
5

The population of a city is growing at an average rate of 3% per year in 1990 the population was 45 000.

Mathematics
1 answer:
Nonamiya [84]3 years ago
5 0
This is an exponential growth/decay problem...

F=Ir^t, F=final value, I=initial value, r=rate, t=time, in this case:

F=I(1.03)^t  and they just want to know when F=2I so

2=1.03^t  take natural log of both sides...

ln2=t*ln1.03

t=ln2/(ln1.03)

t≈23.45

So it will take approximately 23.45 years for the population to double..

1990+23.45=2013.45

So during the year of 2013 the population will have double from its 1990 level.
You might be interested in
Esther is participating in a walk-a-thon. She will raise 5 dollars for her charity for each lap she walks.
avanturin [10]

Answer:

independent variable = number of laps;

dependent variable = number of dollars​

Step-by-step explanation:

If we were to put this information into a slope-intercept form equation, the equation would be: y = 5x (dollars raised = 5 dollars per lap walked). In this case, we are going to use the variables l and d instead of x and y, respectively. The equation instead of being y = 5x, it is going to be d = 5l. In the slope-intercept form X will always be the independent variable and y the dependent variable, because the number we get for Y totally depends on what you plugged in for X. In this equation, l is the independent variable (the number of laps she walks) and d is the dependent variable (number of dollars).

6 0
3 years ago
Read 2 more answers
the graph shows the number of laps Kailee ran around a track over a given number of minutes. please help me someone
STatiana [176]

1 lap in 2.5 minutes

so 4 in 10 minutes and 12 in 30.

Also 0.4 laps in 1 minute


3 0
3 years ago
Name 2 items that measure about 1 foot
miv72 [106K]
A rulEr and paper ?????
5 0
3 years ago
Read 2 more answers
Eight students were asked how many books they read last summer. Their answers are listed below.
likoan [24]
Mode is 7 and the range is 6
6 0
3 years ago
Read 2 more answers
Which statement describes the system of equations?
qwelly [4]

Answer:

Step-by-step explanation:

-5x-4y=-4  ...(1)

25x+ 20y = 20 ....(2)

multiply (1) by -5 you have : 25x+ 20y = 20 ....(2) same equation , same line

so : The system has infinitely solutions.

3 0
3 years ago
Read 2 more answers
Other questions:
  • 5x+8-3x=-10 solve the equation
    7·2 answers
  • What is the product of(-1/4)x(-3/7)?write your answer in the simplest fraction form.
    6·1 answer
  • $8,000 is invested in two different accounts earning 3% and 4% interest. If the two accounts earn a total of $295 in interest ho
    5·1 answer
  • The construction shows angles CAB and IDE. There is a circle created from point A that intersects with ray AC, creating point F,
    9·2 answers
  • What is the equation of the line that is perpendicular to the
    5·1 answer
  • As a contestant on a televised game show, Kiara gets to spin the big prize wheel, which has a radius of 2 meters. What is the pr
    7·1 answer
  • Also this one if not a problem.​
    12·2 answers
  • I need help with this ASAP please!!!!!!!!!
    13·1 answer
  • 6th work. What measure of Central tendency is calculated by adding all the values and diving the sum by the number of values
    7·1 answer
  • How to solve for x (proportions)
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!