The population density of the world is calculated by finding the ratio of the total number of people in the world to the area of ​​land. Since the earth is about 1.5 x 108 square kilometers, approximately how many people would inhabit each square kilometer of the earth? Show the work and / or explain your reason

Answers

Answer 1

Answer:

51

Step-by-step explanation:

A = Surface area of the Earth = [tex]1.5\times 10^8\ \text{km}^2[/tex]

Total number of people on Earth = 7.594 billion as of 2018 = [tex]7.594\times 10^9[/tex]

We need to find the number of people living in each square km of land area.

So, we need to divide the number of people by the land area of the Earth.

[tex]1.5\times 10^8\ \text{km}^2=7.594\times 10^9\ \text{people}[/tex]

[tex]\Rightarrow 1\ \text{km}^2=\dfrac{7.594\times 10^9}{1.5\times 10^8}[/tex]

[tex]\Rightarrow 1\ \text{km}^2=50.63\approx 51\ \text{people}[/tex]

So, 51 people will inhabit each square km of land area.


Related Questions

Find the slope of the line that passes through (5,8) and (2,3).

Answers

Answer:

(-5,-3)

Step-by-step explanation:

y values minus y values over x values minus x values

The cost of a babysitting service is $8 for the first hour and $10 for each
additional hour. If the total cost of babysitting Josue is $58, how many
hours TOTAL was Josue with the babysitter?

Answers

Answer:

6 hours

Step-by-step explanation:

8 dollar - 1st hour = 8

10 dollar times 5 hours= 50dollar

total - 58 dollars for 6hours

Answer:

she was with the babysitter for 6 hours.

Step-by-step explanation:

An item has a listed price of $40. If the sales tax rate is 8% how much is the sales tax (in dollars)

Answers

Answer:

The sales tax will be $3.20

Step-by-step explanation:

HELP PLSSSS WILL MARK BRAINLIEST

Answers

‘ i don’t really feel like explaining it cse i’m so tired but, as a fraction it would be 1/486 .
‘ as a exponent it would be 486 -1 .

C personalities are organized and controlled. They take their time completing tasks accurately, like to research things thoroughly, and are always prepared.  Because they put so much time and effort into everything they do, they hate to be criticized. They are perfectionists at heart and take even the smallest complaint personally.  This makes them extremely difficult to confront. The best way to approach it is to focus on parts of the problem largely out of the C personality’s control or aspects of the problem they might not have considered.  Make it clear that you appreciate all of their efforts and that you’re bringing something to their attention because it’s a variable that they need to have in the equation in the future. No matter what, don’t frame the conflict as a personal attack. If you do, the C personality will likely become resentful and go out of their way to avoid future interactions with you.%%%%%%%%%%%%%%%

Why is is that....we park on drive ways but drive on drive ways

Answers

Answer:

What kind of question is this??

Step-by-step explanation:

Geometry hw 2.6 big ideas math

Answers

??????????????????????????????
Answer:

what???


Explanation:

1) h(x) = -3x + 5; Find h(-1-2)

Answers

Answer:

h(-1) = 8

h(-2) = 11

h(-12) = 41

Step-by-step explanation:

h(x) = -3x + 5

h(-1) = -3(-1) + 5 = 3 + 5 = 8

h(-2) = -3(-2) + 5 = 6 + 5 = 11

h(-12) = -3(-12) + 5 = 36 + 5 = 41

What is the answer for this: f(x)=-5+1​

Answers

Answer:

1 * -4 = -5 + 1

Step-by-step explanation:

How do you find a unit rate for $2.50 for 5 ounces

Answers

Answer:

You divide 2.50 by 5.

So 2.50/5 makes it $0.50 per ounce.

Answer: $0.50 for 1 ounce

Step-by-step explanation:

To find a unit rate, you have to find the cost for one. When we say it's $2.50 for 5 ounces, it's for 5, not 1. So we have to divide by 5.

2.50/5= 0.5 and 5/5=1

The angle bisectors of triangle ABC meet at point P. If PQ = 8 and PA = 17, what is the length of AR?

A. 8
B. 15
C. 17
D. Cannot be determined

Answers

Answer:

I'm not sure but I think it's B

There are over 2,700 species of snakes in the world. Over
600 species are venomous. Write the fraction of species that are not
venomous as a decimal.

Answers

Answer:

4.5

Step-by-step explanation:

2,700 ÷ 600 = 4.5

not a 100% sure just trying to help

What is the correct answer for both? ​

Answers

Answer:

11. C.

12. B.

Step-by-step explanation:

Factor them

how many millimeters equal 40.7 cm?

Answers

Answer:

407

Step-by-step explanation:

Could triangle ABC be congruent to ADC by SSS? Explain

Answers

Answer: it’s C

Step-by-step explanation:

Answer: A

Step-by-step explanation:

f(x) = 2x - 4; g(x) = { f(x)

Answers

Answer:

Step-by-step explanation:

subtract the divied

Alex drives at a speed of 60 miles per hour.
How long will it take to drive 330 miles?

Answers

Answer:

5.5 miles

Step-by-step explanat

330 mph / 60 mph = 5.5 mph

Answer:

5 hours and 30 minutes

Step-by-step explanation:

How many terms are there in the following expression: 3a + 3ab + 7b – 2c – 4d?
5
9
7
1

Answers

Whatever the person on top

Answer: 5

             eergrwergtrw  

Solve 0=2y−8x+10 for y

Answers

Answer:y

y=4x−5

Step-by-step explanation:

one type of insect is 0.0052 meters long. what is this length in scientific notation?

Answers

your answer would be:
5.2*10^(-3)

hope this helps!
happy thanksgiving

Answer:

Because scientific notation has to be in between 1 and 10, you would need this to be 5.2. Count the spaces and since its getting smaller your exponent is negative.

Your answer should be 5.2*10^(-3)

Step-by-step explanation:

geometry, is this right if not whats the answer ?

Answers

Answer: angle PST = 129 degrees

==============================================

Explanation:

Because S and T are midpoints of segments PQ and QR, we know that ST is a midsegment of triangle PQR. Consequently, this means ST is parallel to PR.

From the same side interior angle theorem, the angles (11x-3) and (5x-9) are supplementary angles. This is only true because of the parallel lines.

So we can say the following:

(angle P) + (angle S) = 180

(5x-9) + (11x-3) = 180

(5x+11x) + (-9-3) = 180

16x - 12 = 180

16x = 180+12

16x = 192

x = 192/16

x = 12

--------------------------

Use this to find angle PST

angle PST = 11x-3

angle PST = 11*12-3

angle PST = 132-3

angle PST = 129 degrees

--------------------------

Optionally we can find angle QPR

angle QPR = 5x-9

angle QPR = 5*12-9

angle QPR = 60-9

angle QPR = 51 degrees

As a check, adding the two angles we found should get us 180

(angle PST)+(angle QPR) = 129+51 = 180

The answer checks out.

They want me to put something here and the question is the picture

Answers

Answer:

D. (1, -2)

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDASEquality Properties

Algebra I

Solving systems of equations using substitution/elimination

Step-by-step explanation:

Step 1: Define systems

5x - 2y = 9

3x + 4y = -5

Step 2: Rewrite systems

10x - 4y = 18

3x + 4y = -5

Step 3: Solve for x

Add to equations together:                    13x = 13Divide 13 on both sides:                          x = 1

Step 4: Solve for y

Define:                              3x + 4y = -5Substitute in x:                 3(1) + 4y = -5Multiply:                            3 + 4y = -5Isolate y term:                  4y = -8Isolate y:                           y = -2

And we have our final answer!

Please help i'm timed!!
In the equation 19.8 x 2.3 = n, what is the value of n?

Answers

Answer:

45.54

Step-by-step explanation:

hope this helps

Answer:

n=45.54

Step-by-step explanation:

simplifying both sides of equation

definicion de hipotenusa

Answers

Answer:

La hipotenusa es el lado opuesto al ángulo recto en un triángulo rectángulo, resultando ser su lado de mayor longitud.

Step-by-step explanation:

Answer:

Lado opuesto al ángulo recto en un triángulo rectángulo.

If F, G, and H are the midpoints of the sides of triangle JKL , FG = 37, KL = 48, and GH = 30 find each measure

Answers

Answer:

The measure of JK is 60

Step-by-step explanation:

It is given that the points F, G, and H are the midpoints of the sides of triangle JKL , FG = 37, KL = 48, and GH = 30.

The point F is midpoint of JK, point G is midpoint of KL and the point H is midpoint of LJ as shown in figure .

According to the midpoint theorem, the line connecting the midpoints of two sides is parallel to the third and its length is half of the third si

Answer:

60

Step-by-step explanation:

inverse of the function f(x) = 2x + 5?

Answers

Answer:

[tex]y^{-1} =\frac{1}{2} x-\frac{5}{2}[/tex]

Step-by-step explanation:

Answer:

          x - 5

y = --------------

             2

Step-by-step explanation:

1.  Replace "f(x)" with "y:"  y = 2x + 5

2.  Interchange x and y:  x = 2y + 5

3.  Solve this result for y:

2y = x - 5, or

       

          x - 5

y = --------------

             2

Answer please
Fast



Fast

Answers

Answer:

A. 228.5

B. 10

Step-by-step explanation:

A. Since x represents the number of months, replace x with 6 in the equation. Then multiply 29x6, which equals 174. Then add 174+54.5, which equals 228.5.

B. You need to solve for x by switching the signs in the equation. Set the original equation (29x+54.5) equal to 344.50. To solve for x, first subtract 344.50-54.5, which equals 290 (you subtract because it's the opposite of adding). Then divide 290÷29, which equals 10. You can check your work by replacing x in the original equation with 10, and if you get 344.5, your answer is correct.

Good luck :)

I need the answers to Numbers 1,2,3 and 4 please!!

Answers

1. Unit cost
18/3 = 6

2. When x = 1
In the graph I believe (1, 8)
Unit cost as 8

3. At Manglo since the unit cost is lower

4. 54/9 = 6
Noah runs 6 miles per day
Noah would win (5, 30)
Greta wins (5,45)
Greta wins more miles



Which of the number(s) below are potential roots of the function? q(x) = 6x3 + 19x2 – 15x – 28

Answers

Answer:

±2/3, ±7/2, ±14

Step-by-step explanation:

edge:) 2020

Answer: ±2/3, ±7/2, ±14

Step-by-step explanation: edge 2020

Solve for x. Type only the number in the space below.

Answers

Answer:

-6

Step-by-step explanation:

x+56+x+136=180

2x+192=180

   -192  -192

2x=-12

/2   /2

x=-6

A spinner with 4 colors is spun for a total of 50 trials. Yellow was selected 10 times. What is the experimental probability of the spinner landing on yellow? StartFraction 2 over 25 EndFraction One-fifth One-fourth Two-fifths

Answers

Answer:

b

Step-by-step explanation:

i did it

Answer:

b. 1/5

Step-by-step explanation:

i took the unit test on edge

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