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
Diano4ka-milaya [45]
3 years ago
5

The population of Brazil was 162,300,000 in 1995. It was growing at a rate of about 2% per decade. Predict the population, to th

e nearest hundred thousand, of Brazil in 2015
Mathematics
1 answer:
stiv31 [10]3 years ago
7 0

Answer:

The population is 168,900,000 to the nearest hundred thousand

Step-by-step explanation:

In this question, we are tasked with calculating the population of Brazil given its population in 1995 and her growth rate per decade.

Mathematically, we use an exponential function to calculate this population.

This can be written as P = I(1 + r)^n

where P is the population in 2015 which we are looking for,

I is the initial population which is 162,300,000

r is the rate of increase per decade given as 2% = 2/100 = 0.02,

n is the number of times between the years we are expecting this growth. The difference between the years 2015 and 1995 is 20 years which signifies 2 decades(1 decade is 10 years). Thus our n is 2

We plug these values into the equation above;

P = 162,300,000(1+0.02)^2

P = 162,300,000(1.02)^2

P = 168,856,920 which is 168,900,000 to the nearest hundred thousand

You might be interested in
Which of the following is the quotient of the rational expressions shown here? x/x-1 / 1/x+1.
grandymaker [24]

Answer:

Assignment: 01.07 Laboratory

: 01.07 Laboratory Techniques

Assignment: 01.07 Laboratory

: 01.07 Laboratory Techniques

Assignment: 01.07 Laboratory

: 01.07 Laboratory Techniques

Assignment: 01.07 Laboratory

: 01.07 Laboratory Techniques

Assignment: 01.07 Laboratory

: 01.07 Laboratory Techniques

Step-by-step explanation:

Assignment: 01.07 Laboratory

: 01.07 Laboratory Techniques

Assignment: 01.07 Laboratory

: 01.07 Laboratory Techniques

Assignment: 01.07 Laboratory

: 01.07 Laboratory Techniques

Assignment: 01.07 Laboratory

: 01.07 Laboratory Techniques

Assignment: 01.07 Laboratory

: 01.07 Laboratory Techniques

Assignment: 01.07 Laboratory

: 01.07 Laboratory Techniques

6 0
2 years ago
Use substitution to solve the system of equations.<br> x-2y=1<br> 3x-6y=3
Ivahew [28]
Change first equation
x - 2y = 1
add 2y to both side
x = 2y + 1
Plug into second equation
3(2y+1) - 6y = 3
Distributive property
6y + 3 - 6y = 3
y = 0, plug into first equation
x - 2(0) = 1, x = 1
Solution: x = 1, y = 0
7 0
3 years ago
timothy bought 12 of his cars to the babysitters. these toy cars represent 30% of his toy car collection. what is the total numb
omeli [17]

If 30% of his collection is 12 cars, then we can use the fraction

30/12=100/x

x=40

7 0
3 years ago
Suppose that you have a square pyramid like the one pictured. Which plane section will produce a triangle?
omeli [17]

Answer:

A

Step-by-step explanation:

3 0
3 years ago
I need the answer for this question
joja [24]
3x+3=192 is the equation
To solve the equation, you would subtract 3 from both sides, 3-3 cancels out, so 192-3= 189. Then, you are left with 3x=189 so you divide both sides by 3, 3x divided by 3 cancels out, so you do 189 divided by 3 which is 63.
Answer to equation: x=63
Equation: 3x+3=192
8 0
3 years ago
Other questions:
  • Sara cut off 1/8 of a 48-inch piece of ribbon. Jane cut off 1/9 of a 36-inch piece of ribbon. They compared their cut pieces. Wh
    14·2 answers
  • Two green faucets take 4 hours together to fill a deposit. Two other blue faucets take half together. How long does it take to f
    7·1 answer
  • Can sometime tell me why the discriminate b^2-4ac doesn't identify trinomial 3x^2+4x-15 as something that's factorable with two
    11·1 answer
  • How do I do this exercise?
    15·1 answer
  • Triangle ABC is a scaled copy of triangle DEF. Side AB measures 12 cm and is the longest side of ABC. Side DE measures 8 cm and
    8·1 answer
  • Rachel deposited $200 into an account that earns 6% interest, compound twice a year for 10 years. A=P(1+ r n ) n
    10·1 answer
  • A rectangle’s width is one-fourth of its length. Its area is 9 square units. The equation l(l) = 9 can be used to find l, the le
    14·1 answer
  • Which equations for the measures of the unknown
    10·1 answer
  • Help me plz I rlly need this answer
    9·1 answer
  • A subway pass as a starting value of $75. After one ride, the value of the pass is $72.50. After two rides, it's value is $70. A
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!