9. The diameter of the Earth is 7899.83 miles from the North Pole to the South Pole and 7926.41 miles from opposite points at the equator.
a. Find the approximate surface area of Earth using each measure.
b. About 75% of Earth's surface is covered by water. Find the surface area of water on Earth, using the diameter of the Earth is 7926.41 miles from opposite points at the equator.​

Answers

Answer 1

Answer:

We could think of the Earth as a sphere, where the diameter of this sphere will the mean diameter between the measure from the North pole to the Soth pole and the measure from opposite points of the equator.

Remember that the mean between two numbers A and B is:

Mean = (A + B)/2

In this case, the mean diameter will be:

D = (7,899.83mi + 7,926.41mi)/2 = 7,913.115 mi

And we know that the surface of a sphere of diameter D is:

S = 4*pi*(D/2)^2

Where pi = 3.14

Then the surface of the Earth will be something like:

S = 4*3.14*(7,913.115mi/2)^2 = 196,618,601.47 mi^2

b) We know that 75% of the Earth's surface is water, now we will use the diameter 7,926.41 mi to compute the surface.

First, the total surface of the Earth will be:

S = 4*3.14*(7,926.41mi/2)^2 = 197,279,843.03 mi^2

And 75% of this is water, then the total water surface is 0.75 times that area, this is:

water surface = 0.75*197,279,843.03 mi^2 = 147,959,882.27 mi^2


Related Questions

Can someone help please? i’ll give you brainliest, sorry if it’s hard to see

Answers

1/4 and 4

Step-by-step explanation:

small to large: 2/8 =1/4

large to small: 8/2 =4

Answer: 2x4=8 , 16x8=128

128x8=1024

Step-by-step explanation: hope I help with your problems and sorry if it wrong

Divide the fractions: Leave the answer as an improper fraction

1/5 divided by 2/11

Answers

Answer:

The an

Step-by-step explanation:

Answer:

11/4

Step-by-step explanation:

reciprocal methodchange the operation to multiplicationmultiplyreduce/simplify the fraction if needed (if the fraction is already reduced you don't have to reduce it)

 1           2

___  ÷  ___

 2          11

          1           11

___  ÷  ___

         2           2

         1          11        11

___  × ___ = ___

         2          2        4

since 11/4 is already in a simplified/reduced form we don't need to reduce it or anything.

FINAL ANSWER: 11/4

write-2.16 as a fraction asap!!!!1m

Answers

Answer:

-2 wholes 4/25

Step-by-step explanation:

I used calculator. btw its -2 4/25

hope this helps! mark as brainliest!

Answer:

-2 4/25

Step-by-step explanation:

X+19=-9
pls help!! algebratic equations

Answers

Answer:

x=-28

Step-by-step explanation:

Subtract 19 from both sides.

-9 -19 = -28

Answer:

-28

Step-by-step explanation:

you need to get x by itself, so subtract 19 on each side. -9-19= -28

Subtract.

(29v)−(−13v+59)

Answers

Answer:

(29v)−(−13v+59)

29v + 13v - 59

42v -59

Answer:

42v-59

Step-by-step explanation:

(29v)+13v-59     In this step we first simplify

42v-59              Add like numbers (v)

What is the radius of the base of the cylinder below?

A cylinder with height of 36 inches and diameter of 42 inches.

inches

Answers

Answer:

21

Step-by-step explanation:

HELP ME 50 POINTS RN.

Answers

Answer:

the last one. hope I help u

Answer:

S<30

need explain that?

PLEASE HELP MEEEEE IM DESPRATE T^T

Answers

Answer:

Step-by-step explanation:

we need to know how much 1 sock costs so lets do it: 5.79 divided by 12 is 0.4575

One sock costs 0.479.

Hope this helps <3

The number of people call 911 on March 25th?
A) continuous
B) discrete
C) categorical

Answers

Answer:

I think the answer is continuous hope this helps

Step-by-step explanation:

Also got subscribe to my YT channel BlxeVxbes

Can somebody plz answer this word question correctly thanks

WILL MARK BRAINLIEST WHOEVER ANSWERS FIRST! :DD

Answers

Answer:

i think its 1.6-

Step-by-step explanation: science

Answer:

60%

Step-by-step explanation:

Percentage of money saved by Ovide = [tex]\frac{9}{15} * 100 = \frac{3}{5}*100[/tex]

                                                                = 3 * 20

                                                                = 60%

13. A quadratic function passes through the points (0,5), (2,3), and (3,5). Which
function represents the same relationship?

A h(I) = x2 + 3x + 5

B h(x) = x2 – 3x + 5


C h(c) = -3x2++5

D h(c) = x2
= 2 + 5x - 3

Answers

Answer:

B

Step-by-step explanation:

What is the value of the sin3x/6x; as x approaches to zero

Answers

Step-by-step explanation:

When x = 0,

sin3x / 6x = 0 / 0, which is an indeterminate form.

Hence we use L'Hospital's rule:

d/dx (sin3x) = 3cos3x

d/dx (6x) = 6

Now we have 3cos3x / 6 or 0.5cos3x.

When x = 0, 0.5cos3x = 0.5(1) = 0.5.

Hence the limit is 0.5.

Using limits, it is found that the value of the function is of 0.5.

The limit given is:

[tex]\lim_{x \rightarrow 0} \frac{\sin{(3x)}}{6x}[/tex]

The following property is used:

[tex]\lim_{x \rightarrow 0} \frac{\sin{(ax)}}{ax} = 1[/tex]

Hence, multiplying the numerator and denominator by 0.5:

[tex]\lim_{x \rightarrow 0} \frac{\sin{(3x)}}{6x} = 0.5\lim_{x \rightarrow 0} \frac{\sin{(3x)}}{3x} = 0.5(1) = 0.5[/tex]

The value of the function is of 0.5.

To learn more about limits, you can take a look at https://brainly.com/question/24482719

what is 7.0893 as a decimal but in expanded form​

Answers

Answer:

expanded form: 7+0.08+0.009+0.0003

Step-by-step explanation:

7 = the ones place

0.08 = hundredths place

0.009 = thousandths place

0.0003= ten thousandths place

Who can answer my question in square LMNO find the length of LM

Answers

Answer:

10 units

Step-by-step explanation:

LMNO is a square.

All sides of square are equal

MN = LM

3x + 1 = x + 7

3x - x = 7 - 1

2x = 6

x = 6/2

x = 3

LM = x + 7 = 3 + 7 = 10

LM = 10 units

How do I find the value of X?

Answers

ok so the first think you would do is add 55 and 59 which equals 114. then you would do 180-114 which equals 66. your missing angle or x= 66
hope that helps :3

Help please true or false?

Answers

False true I am really sry if a m wrong

Which ratio is equivalent to 5:9?
9:45
25:81
27:15
30:54

Answers

sorry but none are correct

Answer:

The Answer is D 30:54

Step-by-step explanation:

5 times 6 is 30 and 6 times 9 is 54

Choose the graph below that correctly represents the equation 3x + 9y = −18. (5 points)

the line through the points negative 6 comma 0 and 0 comma 2
the line through the points negative 6 comma 0 and 0 comma negative 2
the line through the points negative 2 comma 0 and 0 comma 6
the line through the points negative 2 comma 0 and 0 comma negative 6

Answers

Answer:

the line through the points negative 6 comma 0 and 0 comma negative 2

Step-by-step explanation:

Rewrite the equation to something you are familiar with such as the slope intercept form; y = mx + b. This means you need to solve for y.

3x + 9y = -18 --- divide everything by 3.

x + 3y = -6

3y = -6 - x

y = -2 - 1/3x

your slope is -1/3 and your y intercept is - 2.

remember, y-intercept is when x = 0. therefore, when x = 0, y = -2.

write as an ordered pair (0, -2). the only option that has (0, -2) is the second one.

Therefore, the line through the points negative 6 comma 0 and 0 comma negative 2.

Heather purchased a sapphire bracelet during the Jewelry Emporium's Semi-Annual Clearance Sale. If Heather paid $149.50 for the bracelet and the original price is $230.00, how much of a discount did she receive?
A.
35%
B.
30%
C.
45%
D.
65%

Answers

She received a 35% discount (A).

230 * 0.35 = 80.5
230 - 80.5 = 149.50, true
By guess and check, it’s A

Solution: A

For construction of a unique quadrilateral at least _____measurements are required.

Answers

Answer:

Five

Step-by-step explanation:

As we know that quadrilateral contains 10 elements that involves 4 sides, 4 angles, and 2 diagonals. It cannot be drawn by four elements at least it required minimum 5 elements.

So as per the given statement, it is required to construct a unique quadrilateral for minimum 5 elements measurements

Hence, the same is to be considered

Solve the equation.
–2x – 18 = 6
A. -12
B. -3
C. -2
D. 6

Answers

Answer:

-12

Step-by-step explanation:

Step 1: Add 18 to both sides.

−2x−18+18=6+18

−2x=24

Step 2: Divide both sides by -2.

−2x

−2

=

24

−2

x=-12

Answer:

-2x -18=6

+18. +18

-2x=24

÷-2. ÷-2

×= -12

what is 7/10 divided by 6 to the second power?

Answers

Answer:0.01944444444 if it is like that then there is going to be a line above 4 for repeating.

Step-by-step explanation:

please let me know if this helps I had questions like this but I don't know if that what they are asking for you to do too! have a great day and I dont mean to be greedy but may i please have BRAINLIEST?    

Does anyone know this? Please and ty! This is worth 15 points but please don’t take advantage :(

Answers

Answer:

A

Step-by-step explanation:

If you were to dilate a point by a scale factor of 2, then if you have the point (-4,0), both the x value and the y value would be multiplied by 2, giving a coordinate of (-8,0). If you do this to the other point, you get (0,4).

Now graph it out, and you get a parallel line that is not right on top, eliminating answer B. It's not C because it is parallel, not intersecting. And it's not D because they are related, they're parallel.

Hope this helps!

.....................​

Answers

Answer:

...?

Step-by-step explanation:

a fraction is shown 5/9 which number equivalent to the fraction

Answers

Answer:

10/18 or 25/45

Step-by-step explanation

Estimate by rounding the divisor to the nearest tens place and the dividend to the nearest
compatible number. Then find the quotient.
Enter the remainder, if any, as a fraction in simplest form.
59 ) 5,613
The estimate is?
The quotient is?

Answers

Answer:

lil mosey

Step-by-step explanation:

When two people play a game, each player starts with 10 points. The winner of each round gets 3 points and the loser of each round loses 3 points. William and Abigail play the game. William wins exactly four rounds, and Abigail ends up with16 points. How many rounds did they play altogether?

Answers

10 rounds
After losing 4 rounds, Abigail’s score would have been -2, to reach 16 points she would’ve needed 6 wins, add that to William’s 4 wins and you get 10 rounds

Which statement best describes the function?

Answers

Answer:

A.) The function is Nonlinear

Step-by-step explanation:

a function is a bunch of ordered pairs of things (in our case the things will be numbers, but they can be otherwise), with the property that the first members of the pairs are all different from one another. A function is an equation that has only one answer for y for every x. A function assigns exactly one output to each input of a specified type. It is common to name a function either f(x) or g(x) instead of y. f(2) means that we should find the value of our function when x equals 2. Functions are used because of following reasons – a) To improve the readability of code. b) Improves the reusability of the code, same function can be used in any program rather than writing the same code from scratch. c) Debugging of the code would be easier if you use functions, as errors are easy to be traced. In mathematics and science, a nonlinear system is a system in which the change of the output is not proportional to the change of the input. Nonlinear problems are of interest to engineers, biologists, physicists, mathematicians, and many other scientists because most systems are inherently nonlinear in nature. Material nonlinearity involves the nonlinear behavior of a material based on a current deformation, deformation history, rate of deformation, temperature, pressure, and so on. Examples of nonlinear material models are large strain (visco) elasto-plasticity and hyperelasticity (rubber and plastic materials). also nonlinear. adjective. If you describe something as non-linear, you mean that it does not progress or develop smoothly from one stage to the next in a logical way. Instead, it makes sudden changes, or seems to develop in different directions at the same time.

Example: Solve the linear equation 3x+9 = 2x + 18.

Example: Solve the nonlinear equation x+2y = 1 and x = y.

Please help me with this homework

Answers

Answer:

your x's will be -2, -1 , 0 , 1, 2

and your y's will be -5, -2, 1, 4, 7

What additional information could be used to prove ΔABC ≅ ΔMQR using SAS? Select two options. m∠A = 64° and AB = MQ = 31 cm CB = MQ = 29 cm m∠Q = 56° and CB ≅ RQ m∠R = 60° and AB ≅ MQ AB = QR = 31 cm

Answers

Answer:

m∠R = 60° and AB ≅ MQ

m∠Q = 56° and CB ≅ RQ

Step-by-step explanation:

Given data :

Prove ΔABC ≅ ΔMQR using SAS

The  missing information to prove ΔABC ≅ ΔMQR using SAS

m∠R = 60° and AB ≅ MQm∠Q = 56° and CB ≅ RQ

Answer:

C. m∠R = 60° and AB ≅ MQ

D. m∠Q = 56° and CB ≅ RQ

May I have brainliest please? :)

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