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Valentin [98]
3 years ago
6

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
Mathematics
1 answer:
Romashka [77]3 years ago
5 0

Answer:

51

Step-by-step explanation:

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

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

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.

1.5\times 10^8\ \text{km}^2=7.594\times 10^9\ \text{people}

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

\Rightarrow 1\ \text{km}^2=50.63\approx 51\ \text{people}

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

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Is this correct ? Help
Nonamiya [84]
Yes, you are correct because 5x+13=143 is the equation and 5*26+13=143

Hope this helps

Have a fantastic day/night
5 0
3 years ago
The diagonal of a rectangle is 15 cm, and the perimeter is 38 cm. What is the area?
tigry1 [53]

Answer:

a² + b² = 15² = 225

P = 2a + 2b = 2(a + b) = 38

P² = 4(a + b)² = 38²

4(a² + 2ab + b²) = 1444

Substitute a² + b² with 225

4(2ab + 225) = 1444

2ab + 225 = 361

2ab = 136

ab = 68 cm²


5 0
3 years ago
Read 2 more answers
Question 22 of 25
Xelga [282]

Answer:

<h3>Option D</h3>

The value of y in the parallelogram is 34°

Step-by-step explanation:

Adjacent angles of the Parallelogram are supplementary

So,

(78° + 3y°) = 180°

78° + 3y° = 180°

Subtract 78° each side we get,

78° - 78° + 3y° = 180° - 78°

3y° = 102°

Now, Divide both side by 3 we get,

3y°/3 = 102°/3

y = 34°

Thus, The value of y in the parallelogram is 34°

<u>-TheUnknownScientist</u><u> 72</u>

4 0
3 years ago
Jason represented the values of his 35 baseball cards in a histogram and in a stem-and-leaf plot.
Arturiano [62]

Answer: C

Step-by-step explanation: The Stem and Leaf plot will show a better example when plotting the for the Baseball cards.

8 0
3 years ago
It takes more time to heat 100 liters of water than 10 liters of water because _____.
mixas84 [53]
<span>... because there are more molecules to heat in 100 liters than in 10 liters.

_____
This assumes energy is supplied to the water at a constant rate, and that the various volumes of water are liquid at the same starting temperature and pressure.</span>
3 0
4 years ago
Read 2 more answers
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