A countrys population in 1990 was 145 million. In 1998 it was 151 million. Estimate the population in 2015 using the exponential growth formula. Round your answer to the nearest million

Answers

Answer 1

Answer:

The population in 2015 will be 165 million.

Step-by-step explanation:

The exponential growth formula is given by:

[tex] f(t) = a(1 + r)^{\Delta t} [/tex]

Where:

a: is the initial population

r: is the rate of increase

Δt: is the time        

With the initial information we can find the rate:

[tex] 151 = 145(1 + r)^{1998-1990} [/tex]      

Using logarithm:                                    

[tex] ln(151) = ln(145) + 8[ln(1 + r)] [/tex]  

[tex] ln(1 + r) = \frac{ln(151) - ln(145)}{8} [/tex]                        

[tex] ln(1 + r) = 5.0683 \cdot 10^{-3} [/tex]          

Using exponential:          

[tex] e^{ln(1 + r)} = e^{5.0683 \cdot 10^{-3}} [/tex]

[tex] r = 5.081 \cdot 10^{-3} [/tex]        

Now, we can find the estimated population in 2015:

[tex] f(t) = 151(1 + 5.081 \cdot 10^{-3})^{2015-1998} [/tex]              

[tex] f(t) = 165 [/tex]              

Therefore, the population in 2015 will be 165 million.

I hope it helps you!


Related Questions

Help
I neeed to get this question right

Answers

Answer:

6/10 is greater than 6/100

Step-by-step explanation:

6/10 = 3/5

6/100 = 3/50

3 fifties is lot more than 3 with 5 parts

hope it makes sense

What is the volume of a hemisphere with a radius of 2.6 m, rounded to the nearest tenth of a cubic meter?

Answers

Answer:

36.81

Step-by-step explanation:

V= (2/3)pir

Answer:

36.8 m^3

Step-by-step explanation:

Ji-yoon's bill at the restaurant was $45.10. She left a tip of 18%.
What was the tip amount (nearest penny)?


answer this pls

Answers

Answer is $8.118.....

Add: 85 + (-96)



help

Answers

Answer:

The awsner is -11

Answer this question to get marked as brainliest!!!

Answers

It would be b, c, d, e, and h

Am I correct?? If not please correct me

Answers

The answer would actually be A
F(x)=3x^2+4x
G(x)=2x^2-x+1
The two x^2 items are both positive and are added together to be 5x^2
The two x items would be added together to get 3x cause of the -x
Then +1 is just +1
Making the equation 5x^2+3x+1
If we were subtracting you would be absolutely correct, but since we are adding would go the opposite direction.
I hope this helps!

Answer: 5x^2+3x+1

Step-by-step explanation:

Solving for (f+g)(x) add both functions so

(3x^2+4x)+(2x^2-x+1)

Add like terms

3x^2+2x^2=5x^2

4x+-x=3x

+1

Add terms

5x^2+3x+1

A cylindrical well has a radius of 10 feet and a height of 15 feet. What
volume of water will it take to fill in the well?

Answers

Answer:

Look below.

Step-by-step explanation:

We can use the information provided to plug it into a...

Fomula to find a volume of a cylinder:

V=πr^2h

V=π(10)^2(15)

V≈4712.39ft

helpppppppppppppppppppppppppp

Answers

Answer:Hmm okay its C because i had that before

Step-by-step explanation:

if its wrong then i dont know because my brother told me

(02.02)
The sum of three consecutive integers is 267. What is the largest integer? (1 point)

Answers

Answer:

90

Step-by-step explanation:

88 plus 89 plus 90 is equal to 267

Hey, my assignment is due in a few hours totally blew over me . Would appreciate some help !

Answers

HOPE THIS HELPS!!!!!!!!!!!!!! :)

120x 2/3 whats the aw2nser (hurry i need help)

Answers

The correct answer to this question would be 80

Answer:

80

Step-by-step explanation:

120/1 x 2/3 = 240/3= 80 Hope that helps!

Pls solve I will mark brainliest!

Answers

It's the fourth answer, y=10. This is because the line is a straigh line is 180 degrees, which is shown in the photo. You have to take away 120 degrees (the angle is the same on both sides) which would leave you with 60. Then, thats the sum of the angle, but since were solving for y, you have to divide 60 by 6, which gives you your answer, 10. Hope this helps, if you need anything else you can message me!

WILL MARK BRAINLIEST

Answers

Answer:

A

Step-by-step explanation:

Math
2 miles is the equivalent to how many feet?

Answers

Answer:

10,560

Step-by-step explanation:

Super easy

Brainliest please :)

10560, hope this helps

I don't know what this is.​

Answers

Because both angles are 90° and 90+90=180

Please! No one got the right answer here and i need it
In their last game, the New England
Patriots scored 9 points in the first half. In
the second half, they scored twice the
amount of points in the first half. What is
the ratio of points scored in the second half
to the total number of points scored?

Answers

Answer:

3:5

Step-by-step explanation.

The first half: 9

The second half is: 15

9:15 =3:5

Need help pleaseee someone

Answers

Answer:

Step-by-step explanation:

Neil has been running a tutoring business since 2005. He charges a monthly fee for weekly tutoring sessions and a phone help line. Each year, he has increased his fee by the same amount. The table shows what Neil charged each customer for two given years of his business:


Year Annual Tutoring Fee
2005 $1200
2008 $1350


A. What is the rate of change and initial value for Neil’s business? How do you know?
B. Write an equation in slope-intercept form to represent the fees that Neil charges each year.

Answers

Answer:

The answer is 2550

Step-by-step explanation:

Add 1200 and 1350 it'll give you 2550

Answer:

250

2550

Step-by-step explanation:

sorry if wrong but I think

A=250

B=2550

how many miles is bowman from stonecrest ga.
a.1 hr 48 min
b.17 min
c.46 min
d.none of the above

Answers

A i’m pretty sure lmk if it’s right

A circle with radius of \greenD{1\,\text{cm}}1cmstart color #1fab54, 1, start text, c, m, end text, end color #1fab54 sits inside a \blueD{3\,\text{cm} \times 3\,\text{cm}}3cm×3cmstart color #11accd, 3, start text, c, m, end text, times, 3, start text, c, m, end text, end color #11accd rectangle. What is the area of the shaded region?

Answers

Answer:

5.86cm²

Step-by-step explanation:

Area of the shaded region = Area of the rectangle - Area of the circle

Area of rectangle = Length * Width

Area of rectangle = 3cm * 3cm

Area of rectangle = 9cm²

Area of the circle = πr²

Given radius r = 1cm

Area of the circle = 3.14(1)²

Area of the circle = 3.14cm²

Area of the shaded region = 9 - 3.14

Area of the shaded region = 5.86cm²

Answer:

5.86cm²

Step-by-step explanation:

Area of the shaded region = Area of the rectangle - Area of the circle

Area of rectangle = Length * Width

Area of rectangle = 3cm * 3cm

Area of rectangle = 9cm²

Area of the circle = πr²

Given radius r = 1cm

Area of the circle = 3.14(1)²

Area of the circle = 3.14cm²

Area of the shaded region = 9 - 3.14

Area of the shaded region = 5.86cm²

In a servey of 80 people ,it was found that 60 liked oranges only and 10 liked both oranges and apples.The nuber of people who liked oranges is five times the number of people who liked apples.By using a venn diagram ,find the number of people who liked apples only and who didn't like any of thses fruits.​

Answers

Answer:

10 people didn't answer the servey

Step-by-step explanation:

servey=80 people

70= answered the servey

so we should take the difference:-

80–70= 10

Hope I got the right answer!

p(x)+p(x+3)=10x-7 find p(3)​

Answers

Answer:

Simplify each term.

Px+px+3p=10x−7

Move all terms not containing P to the right side of the equation.

Px=10x−7−px−3p

Divide each term by x and simplify.

P=10−7/x−p−3p/x

Step-by-step explanation:

What is 1.5•10^4•3•10^ 2?

Answers

The answer is 4500000


Please help! I need this as soon as possible!

Answers

Answer:

1. 136°

2. 36°

3. 136°

4. 36°

5. 136°

6. 36°

7. 136°

8. 44°

Step-by-step explanation:

i don't know english very well so i don't knoe what transplant is but i think i got it right with my logic

Answer:

m∠1 = 136°

m∠2 = 44°

m∠3 = 136°

m∠4 = 44°

m∠5 = 136°

m∠6 = 44°

m∠7 = 136°

Step-by-step explanation:

Corresponding angles, like m∠1 and m∠5, need to equal each other.

m∠1 and m∠3 are the same

m∠3 and m∠2 need to be added together to equal 180

question is down below thank you

Answers

Answer:

In about 2018, we will have the population at 30 million

Step-by-step explanation:

Here, we want to get the year in which the population of Texas will reach 30 million

What we have to do here is to substitute f(x) for 30; then get the value of x at this point

We proceed as follows;

30 = 21(1.02)^x

30/21 = 1.02^x

1.42857 = 1.02^x

ln 1. 148257 = ln 1.02^x

ln 1.148257 = x ln 1.02

ln 1.42857/ln 1.02 = x

x = 18 approximately

Adding this to the initial 2000, we have 2018

What is a common factor for the two fractional terms
11
001 01
x and
?
The terms can be written as 5)
(x) and (11)
log
(x) y).
O 5
100 100

Answers

Weißt du Deutsch, ich kann vielleicht helfen

La propiedad del producto cero indica que si la multiplicación de dos valores es igual a cero, se puede decir que alguno o ambos valores el igual a cero PORQUE Un producto de factores es cero si y solo si ,uno o más de los factores es cero.

Answers

Can u put that in English please?

If y lies on a number line , and x is added to y , which of the following would be true about the location of y + x?

Answers

Answer:

Step-by-step explanation:

If x is a positive number then y + x lies to the right of y, if x is a negative number then the location of y + x will be to the left, if x is zero then y and y + x are the same point

Write an inequality to represent 7 less than the product of a number, n, and 1/6 is at most 45."
Please help me, I need this right away!!!!

Answers

Answer:

The inequality to represent “7 less than the product of a number, n, and 1/6 is at most 45” is:

[tex]\frac{n}{6} -7\leq 45[/tex]

 

Solution:

Let the number be "n"

From given,

7 less than a product of a number n and 1/6 is at most 45

At most means "less than or equal to"

Therefore, inequality is framed as:

[tex]( n x \frac{1}{6}) -7 \leq 45[/tex]

Thus, inequality is:

[tex]\frac{n}{6} -7\leq 45[/tex]

 Solve the inequality:

Add 7 to both sides

[tex]\frac{n}{6} -7 + 7\leq 45 + 7\\simplify\\\frac{n}{6} \leq 52[/tex]

Multiply both sides by 6

[tex]\frac{6n}{6} \leq 52 multiply 6[/tex]

simplify

[tex]n\leq 312[/tex]

Thus the inequality is solved.

hope it help :)

Order the side from greatest to least.
Η.
28°
118°
K
J
side [Select ]

Answers

Answer:

HJ>KJ>HK

Step-by-step explanation:

Side opposite to the largest angle is the largest.

Side opposite to smallest angle is the smallest.

ang K = 118° ang J = 28°

ang K + ang J + ang H = 180° (Sum of all the angles in the triangle is 180°)

118°+28°+angH=180° (Putting the values of ang K & ang J)

146°+angH=180°

ang H=180°-146°

ang H=34°

128°>34°>28°

ang K>ang H>ang J

Here, ang K is the largest, so the side opposite to it i.e. HJ will be the largest side.

Smaller than ang K and bigger than ang J is ang H, so the side opposite to it i.e. KJ will be smaller than HJ but bigger than HK.

Ang J is the smallest angle, so the side opposite to it i.e. HK will be the smallest.

HJ>KJ>HK.

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