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kykrilka [37]
3 years ago
6

23. According to one of Tolkien's essays, there were 144 elves originally created by the gods in Middle-Earth. If their numbers

tripled every century after that, how many elves were there 1000 years after the creation of Middle-Earth?
A) 432,000 elves
B) 59,049,000 elves
C) 432 elves
D) 8,503,056 elves
Mathematics
1 answer:
oksian1 [2.3K]3 years ago
5 0

Answer:

D

Step-by-step explanation:

elves in 1000 years = elves now x (rate of increase)^time

elves increase every century. there are ten years in a century. thus time = 1000/100 = 10 years

144 x (3)^10 =  8,503,056 elves

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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
Romashka [77]

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.

5 0
3 years ago
In 2014, Consumers spent $800 million on e-cigarette products. What percentage of the 2.8 billion dollars spend worldwide was sp
Snowcat [4.5K]

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6 0
3 years ago
8 – 2x = 20<br> What is x
Nesterboy [21]

Here,

8-2x=20

or,8-20=2x

or, -12=2x

or, x=-12/2

therefore,

x=-6

8 0
3 years ago
Need help this is on acellus
madam [21]

The complete inequality is -2 < x < 35

<h3>How to determine the range of value of x?</h3>

The figure attached to the question is the given parameter

From the figure, we understand that:

Side length BA and side length BD are equal.

This is represented as:

BA = BD

Because the side length AC is less than the side length CD, then it means that:

The measure of the angle ABC is less than the measure of the angle CBD

This is represented as:

∠ABC < ∠CBD

Where

ABC = x + 2

and

CBD = 37

Substitute ABC = x + 2 and CBD = 37 in the inequality expression ∠ABC < ∠CBD

So, we have:

x + 2 < 37

Subtract 2 from both sides of the inequality

x + 2 - 2 < 37 - 2

Evaluate the differences

x < 35

From the question, we have the following incomplete inequality

-2 < x < [ ]

Complete the inequality as follows:

-2 < x < 35

Hence, the complete inequality is -2 < x < 35

Read more about angles at:

brainly.com/question/24839702

#SPJ1

8 0
2 years ago
The distance from the tetherball pole to the edge of the circle is 5 feet. What is the circumference of the circle? 5 ft A. 62.9
marshall27 [118]

Answer:

31.4

Step-by-step explanation:

2*Pi*5 equals 31.4 ft correct me if I’m wrong

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