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jok3333 [9.3K]
3 years ago
11

How do scientists infer the presence of black holes since they can't be directly observed?

Mathematics
1 answer:
Andrej [43]3 years ago
7 0

Answer:

The presence of a black hole can be inferred through its interaction with other matter and with electromagnetic radiation such as visible light. Matter that falls onto a black hole can form an external accretion disk heated by friction, forming quasars, some of the brightest objects in the universe.

Step-by-step explanation:

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6 times 1,356 using expanded form
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8,000+100+30+6 
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Y=-x-4
aliina [53]

Answer:

(-4 , 0)

Step-by-step explanation:

Graph attached

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What is the simplified form of the following expression (5/4)^3
Vlad [161]
★ EXPONENTIALLY RESOLVED ★

(5/4)^3

= 5 ( 5 ) ( 5 ) / 4 ( 4 ) (4 )

= 25 ( 5 ) / 16 ( 4 )

= 125 / 64

★✩★✩★✩★✩★✩★✩★✩★✩★✩★✩★
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3 years ago
What is the most abundant gas in the Earth's atmosphere?
butalik [34]

Answer:

Nitrogen

Step-by-step explanation:

Nitrogen and oxygen are by far the most common; dry air is composed of about 78% nitrogen (N2) and about 21% oxygen (O2). Argon, carbon dioxide (CO2), and many other gases are also present in much lower amounts; each makes up less than 1% of the atmosphere's mixture of gases. Hope this helped!

7 0
3 years ago
Read 2 more answers
Find the measure of the arc or angle indicated
MariettaO [177]
Short Answer: arc LM = 110°
Comment

Any two angles that have their end points on the same end points as a chord and both moving away in the same direction (in this case  down ) are equal. This is a fundamental fact about circles.

Equation
2x + 55 =  x + 55
the only way this is going to make any sense is if x = 0. No other value is possible because it will destroy the equality.

Conclusion
Both angles = 55

But that's not what you are asked for.

What you are asked for
You want to know the measure of arc LM.  
The angle connecting the center of the circle with its two arms running through the end points of the chord = the measure of  arc LM

Draw a dot where the center of the circle is and call it O. Draw in <MOL 
<MOL = 2* either of the 55° = 2 (<LKM)  = 2 * 55 = 110° That's a property of the central angle.

The measure of arc LM = 110°
6 0
3 years ago
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