1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Eduardwww [97]
2 years ago
12

He Earth completely rotates on its axis once every 24 hours.

Mathematics
1 answer:
mafiozo [28]2 years ago
7 0

Answer:

A)

58/3 = 19.33 hours

B)

84.00 hours

C)

2074.29 miles

Step-by-step explanation:

Under the assumption the earth is a perfect circle, then in a complete rotation ( 24 hours) the earth will rotate through  360 degrees or 2π radians.

A)

In one day or 24 hours the earth rotates through 360 degrees. We are required to determine the duration it takes to rotate through 290 degrees. Let x be the duration it takes the earth to rotate through 290 degrees, then the following proportions hold;

(24/360) = (x/290)

solving for x;

x = (24/360) * 290 = 58/3 = 19.33 hours

B)

In 24 hours the earth rotates through an angle of 2π radians. We are required to determine the duration it will takes the Earth to rotate through 7π radians. Let x be the duration it takes the earth to rotate through 7π radians, then the following proportions hold;

(24/2π radians) = (x/7π radians)

Solving for x;

x = (24/2π radians)*7π radians = 84 hours

C)

If the diameter of the earth is 7920 miles, then in a day or 24 hours a point on the equator will rotate through a distance equal to the circumference of the Earth. Using the formula for the circumference of a circle;

circumference = 2*π*R = π*D

                         = 7920*3.142

                         = 24891.43 miles

Therefore a point on the equator covers a distance of 24891.43 miles in 24 hours. This will imply that the speed of the earth is approximately;

(24891.43miles)/(24 hours) = 1037.14 miles/hr

The distance covered by the point in 2 hours will thus be;

1037.14 * 2 = 2074.29 miles

You might be interested in
Is the relationship between the 7s in 7,742 and the 7s in 7,785 different in any way
Usimov [2.4K]
No, because they're in the same place value.
4 0
3 years ago
3x^2 + 2x-4 = 0 help
igomit [66]

Answer:

I dont know

Step-by-step explanation:

how to answer that

5 0
2 years ago
Read 2 more answers
A spinner is divided into four equal sections labeled yellow green red and blue. If the splitter is on 40 times what percentage
IrinaVladis [17]
B. most likely because 40 divided by 4 is 10. 10/40 is 25%
6 0
2 years ago
The square footage of a house is 1200 square feet. What type of data is this?
DIA [1.3K]
The answer for the question shown above is: <span>The square footage of a house that is 1200 square feet is the "</span>Area".

 The explanation is shown above:

 1- By definition, the area is the measure of a two-dimensional surface.Its units can be written in m^2, ft^2, in^2...However, in the International System of Units is m^2. 

 2. This is very useful when you want to know the surface of a house. If it is a rectangular house, you can calculate the area as below:

 A=LxW

 Where L is the length and W is the width

 
5 0
3 years ago
Help anyone<br> 8th grade math need it asap
Murljashka [212]

Answer: x = 61

Step-by-step explanation:

0.2x - 3.2 = 1.8 x 5 (multiply 5 on both sides)

0.2x = 9 +3.2 (add 3.2 on both sides)

0.2x = 12.2

x = 61 (divide 0.2x on both sides)

6 0
2 years ago
Other questions:
  • -x = -7 what doesthe equal and how do you do it ​
    15·1 answer
  • A circle has a diameter of 10 centimeters. What is the best approximation of its area? Use 3.14 to approximate for π .
    7·2 answers
  • Someone help with this​
    9·1 answer
  • The vertex of this parabola is at (-5, -2). When the x-value is -4, the
    14·1 answer
  • When dealing with a loan, who benefits from compounding interest more frequently, and why?
    12·2 answers
  • 1.3
    15·1 answer
  • -4x = -28<br> I need an answer...
    7·1 answer
  • I know it small but can someone help me. It says The table below shows customers' favorite ice cream flavors at a popular ice cr
    12·1 answer
  • I’m the figure at right, THINK POWER. <br><br> A) find the measures a, b, and c.
    15·2 answers
  • Drag the tiles to the correct boxes to complete the pairs. Not all tiles will be used.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!