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EastWind [94]
3 years ago
5

Plz help branilest answer.

Mathematics
1 answer:
pickupchik [31]3 years ago
7 0
Where is the question ?
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An astronaut is working on a satellite 200 miles above the ground. What is the measure of BD⌢, the portion of Earth that the ast
natulia [17]

Answer:

420 miles.

Step-by-step explanation:

You would have to be infinitely far away from a sphere in order to see exactly 50% of its surface all at the same moment. Using simple geometry, you can prove that an observer that is a distance d away from the surface of a sphere with radius R can only see a percent area A of the sphere's surface as given by the equation:

A = 50%/(1+R/d)

Where A is the area seen,

R is the earth's radius 4000 miles

And D is the distance above the earth 200 miles

50% = 0.5 in fraction

Substituting values we have

A = 0.5(1 + 4000/200)

A = 0.5(1 + 20) = 0.5 x 21

A = 10.5%

10.5% of 4000 miles = 420 miles.

6 0
3 years ago
Find the distance between the points given.<br><br> (-10, 3) and (-10, 12)
aliina [53]

Answer:

9

Step-by-step explanation:

They both have -10 so just compare 3 and 12. Thats a difference of 9.

3 0
2 years ago
Read 2 more answers
You might need: What is the next term of the geometric sequence? -1/7, 4/7, -16/7<br>​
Kryger [21]
A4= 64/7 a5=-256/7 a6=1024/7
5 0
2 years ago
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The perimeter of the triangle is 15.7 inches, so the equation to solve is 2a + b = 15.7.
zheka24 [161]

Answer:

a=7.85-1/2^b

Step-by-step explanation:

2a=15.7-b Move variable to the right side and change its sign

2a=15.7-b Divide both sides of the equation by 2

a=7.85-1/2^b The final solution for a is


4 0
3 years ago
In the diagram AB is parallel to CD. What is the value of X
aivan3 [116]

Answer:

B) 120

Step-by-step explanation:

6 0
3 years ago
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