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skelet666 [1.2K]
3 years ago
9

In the diagram below BD is parallel to XY, What is the value of Y

Mathematics
1 answer:
Pavel [41]3 years ago
4 0

Answer:

67

Step-by-step explanation:

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Why do planets move faster around a sun with a larger mass?
eimsori [14]
F - for simplification - we assume the orbits are circular (which they approximately are), we have a centrifugal force of <span><span>m<span><span>v2</span>R</span></span><span>m<span><span>v2</span>R</span></span></span><span>, where </span>m<span> is the mass of the planet, </span>v<span> its speed, and </span>R<span> the distance from the (center of the) sun. This force must be equal to the centripetal force, which comes from the sun's attraction, and it is </span><span><span>mG<span>M<span>R2</span></span></span><span>mG<span>M<span>R2</span></span></span></span><span>. Here, </span>M<span> is the mass of the sun, and </span>G<span> is a constant. We don't care about the actual numbers, so we write </span>C<span> be the product </span>MG<span> and observe that it is a constant independent of the orbit. These forces have to cancel out, so we have </span><span><span><span>v2</span>R=C<span>R<span>−2</span></span></span><span><span>v2</span>R=C<span>R<span>−2</span></span></span></span><span>, or </span><span><span><span>v2</span>=C<span>R<span>−3</span></span></span><span><span>v2</span>=C<span>R<span>−3</span></span></span></span><span>, so we have that the speed is proportional to </span><span><span>R<span><span>−3</span>2</span></span><span>R<span><span>−3</span>2</span></span></span><span>. Which means that if you decrease the distance to the sun, the speed goes up.</span>
7 0
4 years ago
Help is for now please
sergij07 [2.7K]
Are the components of a democratic government present under the Duterte Administration? Justify your answer with concrete pieces of evidence. Cite your sources properly.
6 0
3 years ago
Determine if m^2-8m+16. is a perfect square trinomial and factor.
shutvik [7]
Factor m2−8m+16
m2−8m+16
=(m−4)(m−4)

Answer:
(m−4)(m−4)
don't know if this helps or not
4 0
4 years ago
Which of the following shows the solution and graph to the inequality<br> 2x + 1 ≤ 15?
icang [17]

Answer:

C or D

Step-by-step explanation:

I'm taking this same thing, not sure if it's c or d. The thing that I'm puzzled about is what the difference between the white dot and the black dot is.

4 0
3 years ago
Read 2 more answers
Eighteen hats are packaged in 2 boxes. How many hats are packaged in 7 boxes? Justify your answer.
Mekhanik [1.2K]

Answer:

63

Step-by-step explanation:

2 ways: 18/2 = 9   9 times 7 is 63

18 times 3 =54 plus 9 (because 18/2 is 9) is 63

8 0
3 years ago
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