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adell [148]
3 years ago
15

Most of the space in the universe is empty. Part of the reason for the emptiness of space is that the matter in the universe is

gravitationally attracted to other pieces of matter. Most matter in the universe gets pulled into one of the many massive systems held together by the gravitational pull of black holes. These massive systems can be millions of light years wide and contain millions of stars and planets. What do scientists call these massive systems?
Advanced Placement (AP)
1 answer:
BabaBlast [244]3 years ago
4 0
Galaxies? (I think that is the answer if it’s not sorry) but Anwyays I’ll explain it is called galaxy because each of our galaxies have our own solar system, their own sun, planets and all living things.
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Given: The length of side x is 89.75 cm.
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Answer:

y= 155.45 cm

Explanation:

To solve this, we will need to use the Law of Sines

This states that:

\frac{a}{sinA} =\frac{b}{sinB}

Firstly, we need to find the sin of angle y. As this is a 30-60-90 right triangle, we know that the angle must be 60 degrees

Now that we have side x, the angle X, and the angle Y, we can solve for the side y using the Law of Sines

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Next we can solve for y

\frac{89.75sin(60)}{sin(30)} =y

When plugged into a calculator, you get the value of 155.45 cm for side y

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