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natka813 [3]
3 years ago
8

Explain the steps of the life cycle of a star. Beginning with a nebula and ending with old age/death of a star, explain each ste

p in a star’s life cycle.
Mathematics
1 answer:
laiz [17]3 years ago
7 0
These steps are completely dependant on the size of the star, but I will give the lifecycle of a large star.

First, a star is born in a nebula, which is a cloud of gas in space.
Then, it becomes larger as it burns hydrogen through nuclear fusion.
When it dies, it goes out in a HUGE bang called a supernova (For an even bigger star, it becomes a hypernova).
Finally, it can end up as a black hole if the whole star collapses into an infinitely dense mass; it can end up as a neutron star, or it can end up as a pulsar.
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Please help me understand, thank you.
monitta

Answer:

195.6 mph, 069 degrees

Step-by-step explanation:

two different ways, same result

7 0
3 years ago
Please solve for y! I will make the first answer brainlist!(sorry if I spelled it wrong) :)
Lapatulllka [165]

Answer:

y = -5

Step-by-step explanation:

<em>-</em><em>7</em> = <em>y </em><em>-</em><em>2</em><em> </em>

<em>y </em><em>=</em><em> </em><em>-</em><em>7</em><em> </em><em>+</em><em>2</em>

<em>y </em><em>=</em><em> </em><em>-</em><em> </em><em>5</em><em> </em>

<em>plz </em><em>mark</em><em> my</em><em> answer</em><em> as</em><em> brainlist</em><em>.</em><em>.</em>

7 0
2 years ago
Read 2 more answers
What is tje equation of the function?
crimeas [40]

Answer:

It is relatively easy to determine whether an equation is a function by solving for y. When you are given an equation and a specific value for x, there should only be one corresponding y-value for that x-value. For example, y = x + 1 is a function because y will always be one greater than x.

Step-by-step explanation:

8 0
3 years ago
A student types 160 words in 4 min which unit rate represents this ratio
zepelin [54]
40 wpm. Because 160/4=40.
I hope that helped!
5 0
3 years ago
A physical fitness association is including the mile run in its secondary-school fitness test. The time for this event for boys
Luba_88 [7]

Answer:

z=-1.28

And if we solve for a we got

a=470 -1.28*60=393.2

So the value of height that separates the bottom 10% (Fastest 10%) of data from the top 90% is 393.2.

so if the time is 393.2 or lower a boy would earn a certificate of recognition from the fitness association

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Solution to the problem

Let X the random variable that represent the time for this event of a population, and for this case we know the distribution for X is given by:

X \sim N(470,60)  

Where \mu=470 and \sigma=60

NOTE: For this case the fastest 10% is on the lower tail of the distribution

For this part we want to find a value a, such that we satisfy this condition:

P(X>a)=0.9   (a)

P(X   (b)

Both conditions are equivalent on this case. We can use the z score again in order to find the value a.  

As we can see on the figure attached the z value that satisfy the condition with 0.1 of the area on the left and 0.9 of the area on the right it's z=-1.28. On this case P(Z<-1.28)=0.1 and P(z>-1.28)=0.9

If we use condition (b) from previous we have this:

P(X  

P(z

But we know which value of z satisfy the previous equation so then we can do this:

z=-1.28

And if we solve for a we got

a=470 -1.28*60=393.2

So the value of height that separates the bottom 10% (Fastest 10%) of data from the top 90% is 393.2.

so if the time is 393.2 or lower a boy would  earn a certificate of recognition from the fitness association

4 0
3 years ago
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