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tia_tia [17]
2 years ago
14

-1.2 29 20 Enter the answer as an exact decimal or simplified fraction

Mathematics
1 answer:
Rudiy272 years ago
6 0

Answer:

ohh

Step-by-step explanation:

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He Earth completely rotates on its axis once every 24 hours.
mafiozo [28]

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

7 0
2 years ago
1. -4x +5 &gt; -5<br> I need help
mojhsa [17]

Step-by-step explanation:

-4x+5>-5

    -5   -5

-4x>-10

/-4   /-4

x<2/5

You switch the sign whenever you divide a negative. In this case, we did, so instead of it being x>2/5, the answer is x<2/5.

hope it helps! :3

6 0
2 years ago
Read 2 more answers
Please tell me the answer I'm stuck for I promise I will give u a brainliest only if it is correct
Tanzania [10]
The answer is (3,-8)

7 0
2 years ago
Read 2 more answers
Whats the square root of 9/49. Please help il mark you as brainlist
scZoUnD [109]

Answer:

3/7

Step-by-step explanation:

the square root of 9 is 3, the square root of 49 is 7

5 0
3 years ago
Read 2 more answers
Please help me thank you
Helga [31]

Answer:

C. The product of 12 and √17

Step-by-step explanation:

Because it gives a number that isn't a repeating or terminating decimal.

6 0
3 years ago
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