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MAVERICK [17]
3 years ago
5

In 1940​, a certain​ country's population was 79,042,573 and its area was 2,919,166 square miles. In 2000​, the​ country's popul

ation was 283,891,555 and its area was 3,678,844 square miles. Compute the population densities of both years.
Mathematics
1 answer:
Debora [2.8K]3 years ago
3 0

Answer:

Step-by-step explanation:

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From his eye, which stands 1.61 meters above the ground, Jacob measures the angle
bixtya [17]

Step-by-step explanation:

we have a right-angled triangle, that is "hovering" 1.61 m above the ground.

the Hypotenuse (the side opposite of the 90 degree angle) is the line of sight from the eye to the top of the skyscraper.

one leg is the height of the skyscraper (minus the 1.61 m).

the other leg is the ground distance from Jacob to the skyscraper (281 m).

we know already 2 angles : the 90° angle between the ground distance and the skyscraper height. and the 25° between the ground distance and the line of sight.

and as we know that the sum of all angles in a triangle is always 180°, we know that the third angle (between the line of sight and the skyscraper height) is

180 - 90 - 25 = 65°

now we can use the law of sines

a/sin(A) = b/sin(B) = c/sin(C)

(the ratio between a side and its opposing angle)

to get all missing side lengths.

the 25° angle is opposite of the skyscraper height, and the 65° angle is opposite of the ground distance (the only side length we know so far).

so,

height/sin(25) = 281/sin(65)

height = 281 × sin(25)/sin(65) = 131.0324519... m

to get the full height of the skyscraper, we need to add the 1.61 m that the described triangle was "hovering" above ground.

therefore, the height of the skyscraper is

131.0324519... + 1.61 = 132.6424519... ≈ 132.6 m

7 0
3 years ago
Supercalifragilisticexpialidocios
serious [3.7K]
Ven though the sound of it is something quite atrocious
If you say it loud enough you'll always sound precocious:
Supercalifragilisticexpialidocious!

Um diddle diddle diddle, um diddle ay!
Um diddle diddle diddle, um diddle ay!
Um diddle diddle diddle, um diddle ay!
Um diddle diddle diddle, um diddle ay!

[BERT]
Because I was afraid to speak when I was just a lad
Me father gave me nose a tweak and told me I was bad
But then one day I learned a word that saved me achin' nose

[MARY POPPINS & BERT]
The biggest word you ever heard, and this is how it goes: Oh, supercalifragilisticexpialidocious!
Even though the sound of it is something quite atrocious
If you say it loud enough you'll always sound precocious
Supercalifragilisticexpialidocious!

Um diddle diddle diddle, um diddle ay!
Um diddle diddle diddle, um diddle ay!
Um diddle diddle diddle, um diddle ay!
Um diddle diddle diddle, um diddle ay! He traveled all around the world and everywhere he went
He'd use his word and all would say, "There goes a clever gent!"

[BERT]
When Dukes or Maharajas aass the time of day with me
I say me special word and then they ask me out to tea

[MARY POPPINS & BERT]
Oh, supercalifragilisticexpialidocious!
Even though the sound of it is something quite atrocious
If you say it loud enough you'll always sound precocious
Supercalifragilisticexpialidocious!

Um diddle diddle diddle, um diddle ay!
Um diddle diddle diddle, um diddle ay! Um diddle diddle diddle, um diddle ay!

[MARY POPPINS, spoken]
You know you can say it backwards which is "dociousaliexpilisticfragicalirupus"... but that's going a bit too far, don't you think?

[BERT, spoken]
Indubitably!

[MARY POPPINS, sung]
So when the cat has got your tongue, there's no need for dismay
Just summon up this word and then you've got a lot to say
But better use it carefully or it could change your life! [MAN, spoken]
For example...

[MARY POPPINS, spoken]
Yes?

[MAN, spoken]
One night I said it to me girl, and now me girl's my wife!
Oh, and a lovely thing she is, too



brainliest?

[MARY POPPINS & BERT]
She's....
Supercalifragilisticexpialidocious!
Supercalifragilisticexpialidocious!
Supercalifragilisticexpialidocious!
Supercalifragilisticexpialidocious!
5 0
3 years ago
Read 2 more answers
2/5 of the students in your class are in band. Of these, 1/4 play the saxophone. What fraction of your class plays the saxophone
Nimfa-mama [501]
So the problem asks us to find the fraction of your class that plays the saxophone. To find this, all you need to do is divide 2/5 by 1/4. We need to do this because we are basically taking 1/4 of 2/5. When we do this operation, we get 8/5, which is 1 3/5 in mixed fraction form. Hence, the solution to your question is 8/5 or 1 3/5 of the fraction of students in the band play the saxophone. Hope this helps!
3 0
3 years ago
Read 2 more answers
The perimeter of a triangle is 42 yards. the first side is 5 yards less than the second side, and the third side is 2 yards less
Zina [86]
The 1st side is 13 yards, the 2nd is 18 yards, and the 3rd is 11 yards
7 0
3 years ago
Read 2 more answers
Please help! What’s the error in line 1 ?
sveticcg [70]

Answer:

When you add variables with exponents, you do not add the exponents together.

The error -> y^2+2y^2=3y^4

In this case, they have added the exponent 2+2=4.

However, you do not add it. Instead, the answer should be 3y^2

6 0
3 years ago
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